Including the current and noncurrent portions, carrying value as of the balance sheet date of a written promise to pay a note, initially due after one year or beyond the operating cycle if longer, which can be exchanged for a specified amount of one or more securities (typically common stock), at the option of the issuer or the holder.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22))
-SubTopic 10
-Topic 210
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 942
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(16))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478546/942-210-S99-1

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 944
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(16)(a)(2))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478777/944-210-S99-1

Name:	us-gaap_ConvertibleNotesPayable
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Convertible notes payable (Details Narrative)	6 Months Ended
Convertible notes payable (Details Narrative)	Jun. 30, 2025 USD ($)	Jun. 30, 2025 CNY (¥)	Jun. 30, 2025 CNY (¥)	Jun. 20, 2025 CNY (¥)	May 25, 2025 CNY (¥)	May 16, 2025 CNY (¥)	May 06, 2025 CNY (¥)	Dec. 31, 2024 CNY (¥)
Convertible Notes Payable
Convertible notes payable	$ (0)		¥ 0					¥ 149,090,866
Convertible payable issued	148,662,239	¥ 1,064,213,504
Converted to shares	$ 169,489,058	¥ 1,213,304,370
Aggregate principal amount					¥ 10,000,000	¥ 80,000,000	¥ 36,000,000
Aggregate issue amount						¥ 20,000,000	¥ 2,880,000
Convertible note principal amount				¥ 35,000,000
Convertible notes payable				¥ 32,200,000