Related party transactions and balances (Tables)

12 Months Ended

Dec. 31, 2023

Related Party Transactions [Abstract]

Schedule of related parties

Name of Related Parties	Relationship	Nature	December 31, 2022		December 31, 2023		December 31, 2023
			RMB		RMB		USD
Shenzhen Ultimate Holographic Culture Communication Co., Ltd	Shenzhen Mengyun’s 19.9% equity investment	Advances for operational purposes, no interest, due on demand		60,280		-		-
Total:				60,280		-		-

The amounts due to related parties consists of the following:

Name of Related Parties	Relationship	Nature	December 31, 2022		December 31, 2023		December 31, 2023
			RMB		RMB		USD
Yuxiu Han.	Former shareholder and current legal representative of Shenzhen Bowei	Advances for operational purpose, no interest, due on demand		350,000		-		-
Total:				350,000		-		-