XML 92 R76.htm IDEA: XBRL DOCUMENT v3.23.1
Property, plant and equipment (Details) - CNY (¥)
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Statement [Line Items]    
Beginning Balance   ¥ 53,720,000
Depreciation ¥ 2,952,000 2,973,000
Ending Balance   53,720,000
Carrying Amount Of Assets 39,228,000 42,180,000
Balance At The Beginning   8,567,000
Balance At The End 14,492,000 11,540,000
Property [Member]    
Statement [Line Items]    
Beginning Balance   48,140,000
Depreciation 2,286,000 2,285
Ending Balance   48,140,000
Carrying Amount Of Assets 38,527,000 40,813,000
Balance At The Beginning   5,042,000
Balance At The End 9,613,000 7,327,000
Leasehold improvements [Member]    
Statement [Line Items]    
Beginning Balance   3,923,000
Depreciation 553,000 553,000
Ending Balance   2,863,000
Carrying Amount Of Assets 507,000 1,060,000
Balance At The Beginning   2,310,000
Balance At The End 3,416,000 2,310,000
Office equipment & furniture [Member]    
Statement [Line Items]    
Beginning Balance   1,078,000
Depreciation 113,000 135,000
Ending Balance   1,078,000
Carrying Amount Of Assets 165,000 278,000
Balance At The Beginning   665,000
Balance At The End 913,000 800,000
Motor vehicles [member]    
Statement [Line Items]    
Beginning Balance   579,000
Depreciation 0 0
Ending Balance   579,000
Carrying Amount Of Assets 29,000 29,000
Balance At The Beginning   550,000
Balance At The End ¥ 550,000 ¥ 550,000