Exhibit 5.2

RACHEL HAN

Partner, Co-Head Asia Capital Markets

T: (852) 2105 0230

E: han.rachel@dorsey.com

July 17, 2026

To:

AIOS Tech Inc.
Room 407, Tower 2, Harbour Centre,

8 Hok Cheung Street, Hunghom,

Kowloon, Hong Kong

Dear Sir/Madam,

Legal opinion in respect of AIOS Tech Inc.’s Registration Statement on Form F-3 dated on 17 July, 2026 and filed with the United States Securities and Exchange Commission under the United States Securities Acts of 1933, as amended (the “Act”) (the “Registration Statement”) relating to (i) the resale, from time to time, by the selling shareholders identified in the Registration Statement, of up to 3,000,000 Class A common shares, par value US$0.20 per share (“Class A Common Shares”), issued in a private placement completed on March 6, 2026, and up to 6,000,000 Class A Common Shares issuable upon exercise of warrants issued in such private placement, and (ii) the potential offering, issuance, and sale from time to time of AIOS Tech Inc.’s Class A Common Shares, warrants, rights and units of up to US$300,000,000 in one or more offerings (the “Proposed Transaction”).

We have acted as Hong Kong legal advisers to AIOS Tech Inc., a company incorporated under the laws of the British Virgin Islands (the “Company”), in connection with the Proposed Transaction, on which we have been asked to provide you with our opinion (set out exclusively in this letter) in connection with its subsidiary, YD Network Technology Company Limited (雲頂互聯網科技有限公司), a company incorporated in Hong Kong (business registration number 76312485) (“YD Network”) (the “Hong Kong Subsidiary”).

This opinion is limited to the laws of Hong Kong in force as of the date hereof as currently applied by the Hong Kong courts and is given on the basis that they will be governed by and construed in accordance with Hong Kong law. We express no opinion as to the laws of any other jurisdiction or as to factual matters. We have assumed that there is nothing in the laws of any other jurisdiction which affects the opinions in this opinion letter, and we have made no investigation of, and express no opinion in relation to, the laws of any other jurisdiction for the purposes of this letter. In this letter, a reference to “laws” or “law” is a reference to the common law, principles of equity and laws and regulations constituted or evidenced by documents available to the public generally.

In giving the opinion below, we have examined only the Registration Statement, documents, searches and enquiries included in Appendix 1 which we have not independently verified and no other documents. The opinion is subject to the qualifications and reservations set out in Appendix 2 Assumptions and Appendix 3 Qualification or elsewhere herein.

In this opinion letter, the headings are for ease of reference only and shall not affect the meaning.

The attached Appendices (1-3) form an integral part of this opinion.

This opinion is confined to matters of Hong Kong law in force on the date of this opinion as currently applied and interpreted by the courts of Hong Kong; and we assume no responsibility to update or supplement this opinion to reflect any developments or changes of law which may occur after the date of this opinion. We express no opinion about the law of any other jurisdiction.

We assume no responsibility to update this opinion letter to take account of changes in law taking place after its date of issue.

No opinion is expressed on matters of fact, commercial matters or intention of the parties.

The opinions as to matters in connection with the Hong Kong Subsidiary are limited to the matters specified herein. In particular, this opinion letter does not extend to any contract or asset or otherwise relevant to the Hong Kong Subsidiary or in respect of any transaction, or any related documentation, entered into by the Hong Kong Subsidiary.

Based on the Documents Examined and the Searches as set out in Appendix 1, certain corporate matters of the Hong Kong Subsidiary as of the date hereof are set out as below:

The Documents Examined and the Searches as set out in Appendix 1 do not reveal that the Hong Kong Subsidiary is in liquidation, administration, receivership or administrative receivership or that a winding up or administration petition has been presented against it.

YD Network has obtained the following business registration certificate for its business carried out in Hong Kong. Details of the current business registration certificate are as follows:

Based on the letter of confirmation dated May 28, 2026 from the board of directors of the Hong Kong Subsidiary, the operation of the business is not regulated or governed by any governmental authority in Hong Kong, save for the business registration in accordance with the Business Registration Ordinance (Chapter 310 of the laws of Hong Kong), with which the Hong Kong Subsidiary has duly complied. The Hong Kong Subsidiary is not required to obtain any other licence or permit from the Hong Kong authorities for its existing business or business operation in Hong Kong as of the date hereof.

Hong Kong has no arrangement for the reciprocal enforcement of judgments with the United States. As a result, there is uncertainty as to the enforceability in Hong Kong, in original actions or in actions for enforcement, of judgments of U.S. courts of predicated upon civil liabilities based solely upon the federal securities laws of the United States or the securities laws of any state or territory within the United States. A judgment of a court in the United States predicated upon U.S. federal or state securities laws may be enforced in Hong Kong at common law by bringing an action in a Hong Kong court on that judgment for the amount due thereunder, and then seeking summary judgment on the strength of the foreign judgment, provided that the foreign judgment, among other things, is (1) for a debt or a definite sum of money (not being taxes or similar charges to a foreign government taxing authority or a fine or other penalty) and (2) final and conclusive on the merits of the claim, but not otherwise. Such a judgment may not, in any event, be so enforced in Hong Kong if: (a) it was obtained by fraud; (b) the proceedings in which the judgment was obtained were opposed to natural justice; (c) its enforcement or recognition would be contrary to the public policy of Hong Kong; (d) the court of the United States was not jurisdictionally competent; or (e) the judgment was in conflict with a prior Hong Kong judgment.

Based solely upon the disclosures contained in the Registration Statement and the qualifications, assumptions and limitations set forth herein, and subject to any matters not disclosed to us, and having regard to such considerations of the laws of Hong Kong in force as of the date of this letter as we consider relevant, we are of the view that the description of Hong Kong laws, if any, set forth in the Registration Statement, in the resale prospectus (as defined in the Registration Statement) under the captions “Prospectus Summary,” “Enforceability of Civil Liability,” and “Legal Matters” and in the universal shelf prospectus (as defined in the Registration Statement) under the captions “Prospectus Summary,” “Risk Factors,” “Enforceability of Civil Liability,” and “Legal Matters,” in each case insofar as such statements purport to summarize Hong Kong laws, correctly and fairly summarizes in all material respects the matters referred to therein. Nothing has been omitted from such description which would render the same misleading in any material respect.

This opinion is given in respect of the laws of Hong Kong which are in force, and is based upon facts and circumstances in existence at 8 a.m. Hong Kong time on July 17, 2026. We assume no obligation to update this opinion for any changes in the laws of Hong Kong or other events or circumstances that occur after 8 a.m. Hong Kong time on July 17, 2026.

Hong Kong law shall apply to our responsibilities with regard to this opinion and to all issues arising out of those responsibilities.

APPENDIX 1

DOCUMENTS, SEARCHES AND ENQUIRIES

We have examined a copy of each of the following documents:

YD Network Technology Company Limited (雲頂互聯網科技有限公司) (“YD Network”)

APPENDIX 2

ASSUMPTIONS

We have made the assumptions set out below without investigation.

The genuineness of all signatures and seals (where applicable) on, and the authenticity and (except in the case of a document which is expressly stated to be an extract) the completeness of, all documents or copy documents submitted to us.

The conformity to original documents of all documents submitted to us as copies.

That the information provided to us pursuant to the Searches was complete, accurate and up-to-date at the time of the relevant search or enquiry, and did not fail to disclose any material information which had been delivered for filing or registration but was not disclosed, or, as the case may be, did not appear on the public files or relevant registers at the time of such Searches, and since that time there have been no changes affecting the results of such Searches. It should be noted, however, that such Searches are not capable of revealing definitively whether or not a winding-up or bankruptcy petition, as the case may be, has been presented or an administration or similar insolvency proceeding commenced. Notice of a winding-up or bankruptcy petition, a winding-up or bankruptcy order (as the case may be) or resolution, or a notice of appointment of a receiver (or similar insolvency representative) may not be filed at the Companies Registry of Hong Kong or the Official Receiver’s Office of Hong Kong immediately and there may be a delay in the relevant notice appearing on the file of the company concerned. In addition, certain types of proceedings such as (but without limitation) applications for injunctive relief may be commenced without filings being recorded and any action commenced in the District Court of Hong Kong or before any tribunal in Hong Kong is not recorded in the records of the High Court of Hong Kong.

That the persons who signed the Documents Examined were duly authorized by the relevant party and there has been no revocation of such authorization; that each Document Examined has been properly signed or properly executed (including, where applicable, sealed with the correct seal) and delivered by or on behalf of each party in accordance with the laws of its jurisdiction of organization or incorporation.

The accuracy and completeness of all factual representations, whether via oral or written instructions, provided by the Company and the Hong Kong Subsidiary and/or their respective representatives are true, accurate and complete, to our best belief. All factual statements in the Documents Examined are true and accurate as of the date of this opinion save as expressly stated herein. That no person has engaged in, or is or will be engaging in, misleading or deceptive or unconscionable conduct or be seeking to conduct any relevant transaction or any associated activity in a manner which might render this opinion or any transaction or associated activity untrue or incorrect.

That all facts, documents and information relating to the Hong Kong Subsidiary or otherwise which may affect this opinion have been provided to us and that no physical inspection or interview has been conducted with the directors, shareholders or officers of the Hong Kong Subsidiary to determine the factual statements in any of the Documents Examined.

That the laws of any other jurisdiction which may apply with respect to the transactions and matters contemplated in the Proposed Transaction will not affect any of the conclusions stated in this opinion letter.

That there are no insolvency proceedings in Hong Kong in respect of the Hong Kong Subsidiary, and no step has been taken with a view to insolvency proceedings, which has not been disclosed in the Searches (it being possible for action in relation to, or by way of, insolvency proceedings to have been taken which do not yet appear on the applicable registers or which are not required to be filed on the registers we have searched).

That the Hong Kong Subsidiary is not the subject of any insolvency proceedings in any other jurisdiction; and that no step has been taken with a view to the commencement or opening of any insolvency proceedings in relation to the Hong Kong Subsidiary in any other jurisdiction.

APPENDIX 3

QUALIFICATIONS

We express no opinion as to (i) whether any party is entitled to immunity (of whatever type) from suit or in respect of its assets; or (ii) the effectiveness of any waiver of immunity by it or whether any such waiver will bind its successors (whether de facto or de jure).

We express no opinion as to enforceability of any document, which may be limited by general principles of equity or public policy from time to time.

As regards jurisdiction, a Hong Kong court may stay any proceedings brought before a Hong Kong court if concurrent proceedings are being brought in another jurisdiction. A Hong Kong court may (and in certain circumstances must) decline jurisdiction over matters arising under the Proposed Transaction if (i) the matter is subject of proceedings or a judgment in a foreign court or (ii) the court determines that the matter may more conveniently be determined in a foreign court. Where the transactions contemplated under the Proposed Transaction are to be performed in jurisdictions outside Hong Kong, they may not be enforceable under Hong Kong laws, notwithstanding the choice of Hong Kong laws as the proper law of the contract, if and to the extent that such performance would be illegal or contrary to public policy under the laws of such jurisdiction.

Hong Kong courts will not enforce obligations to be performed in another jurisdiction to the extent that such performance would be illegal or contrary to principles of public policy under the laws of that jurisdiction.

The validity or enforceability of an obligation or any interest may be discharged or otherwise adversely affected by laws applicable in insolvency proceedings or by other laws affecting creditors’ rights generally. Insolvency laws typically provide that, in certain circumstances, transactions previously entered into by a company which is the subject of insolvency proceedings may be set aside and that a liquidator or office-holder may reclaim sums previously paid by the company or assets previously transferred by it. We also draw attention to the power of a liquidator to disclaim any unprofitable contract or other onerous property. A liquidator does not require the permission of a court to exercise this power.

Claims may become time-barred under the Limitation Ordinance (Cap. 347 of the Laws of Hong Kong).