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Financial Assets and Financial Liabilities - Information About Credit Risk Exposure on Group's Trade Receivables Using Provision Matrix (Details) - CNY (¥)
¥ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Disclosure Of Provision Matrix [Line Items]    
Expected credit loss rate 4.86% 5.62%
Gross carrying amount (RMB'000) ¥ 179,653 ¥ 216,242
Expected credit loss (RMB'000) ¥ 5,672 ¥ 10,818
Current    
Disclosure Of Provision Matrix [Line Items]    
Expected credit loss rate 2.80% 2.39%
Expected credit loss (RMB'000) ¥ 1,824 ¥ 2,270
1-90 Days    
Disclosure Of Provision Matrix [Line Items]    
Expected credit loss rate 3.30% 3.42%
Expected credit loss (RMB'000) ¥ 733 ¥ 1,039
91-180 Days    
Disclosure Of Provision Matrix [Line Items]    
Expected credit loss rate 7.66% 6.39%
Expected credit loss (RMB'000) ¥ 1,508 ¥ 2,215
Over 181 days    
Disclosure Of Provision Matrix [Line Items]    
Expected credit loss rate 16.47% 16.36%
Expected credit loss (RMB'000) ¥ 1,607 ¥ 5,294
Gross Carrying Amount    
Disclosure Of Provision Matrix [Line Items]    
Gross carrying amount (RMB'000) 116,776 192,540
Gross Carrying Amount | Current    
Disclosure Of Provision Matrix [Line Items]    
Gross carrying amount (RMB'000) 65,102 95,140
Gross Carrying Amount | 1-90 Days    
Disclosure Of Provision Matrix [Line Items]    
Gross carrying amount (RMB'000) 22,232 30,351
Gross Carrying Amount | 91-180 Days    
Disclosure Of Provision Matrix [Line Items]    
Gross carrying amount (RMB'000) 19,686 34,680
Gross Carrying Amount | Over 181 days    
Disclosure Of Provision Matrix [Line Items]    
Gross carrying amount (RMB'000) ¥ 9,756 ¥ 32,369