Related party transactions - Schedule of List of Related Parties (Details)	12 Months Ended
Mar. 31, 2026
Zhonghua Fu [Member]
Related party transactions - Schedule of List of Related Parties (Details) [Line Items]
Relationship with the Company	Chief Executive Officer, Director and Legal representative of PRC Subsidiary

This element represents a description of the nature of common ownership or management control relationships with other entities, regardless of there being transactions between the entities, when the existence of that control could result in operating results or financial position of the reporting entity significantly different from that which would have been obtained if the entities' were autonomous.

No definition available.

Name:	us-gaap_NatureOfCommonOwnershipOrManagementControlRelationships
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration