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Notes to the Consolidated Statements of Cash Flows - Additional Information (Details) - CNY (¥)
12 Months Ended
Feb. 29, 2020
Dec. 31, 2021
Dec. 31, 2020
Disclosure Of Consolidated Statements Of Cash Flows [Line Items]      
Percentage of equity interests acquired 100.00%    
Business acquisition of ordinary shares issued 4,856,273    
Additions to right of use assets   ¥ 2,734,000 ¥ 5,682,000
Offset Of Non-Current Loan Receivable Against a Non Current Loan Payable     36,000,000,000
Building      
Disclosure Of Consolidated Statements Of Cash Flows [Line Items]      
Additions to right of use assets   2,259,000 1,286,000
Property, plant and equipment [member]      
Disclosure Of Consolidated Statements Of Cash Flows [Line Items]      
Additions to right of use assets   ¥ 475,000 ¥ 4,396,000
Rosenkavalier Group      
Disclosure Of Consolidated Statements Of Cash Flows [Line Items]      
Percentage of equity interests acquired     100.00%
Business acquisition of ordinary shares issued     4,856,273
Business acquisition of estimated fair value     ¥ 284,000,000,000