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INTEREST- BEARING BANK BORROWINGS (SECURED) - Bank borrowings are denominated in currencies (Details) - CNY (¥)
¥ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Disclosure Of INTEREST- BEARING BANK BORROWINGS SECURED [Line Items]    
Borrowings ¥ 36,217 ¥ 36,203
Renminbi    
Disclosure Of INTEREST- BEARING BANK BORROWINGS SECURED [Line Items]    
Borrowings 0 0
US dollars    
Disclosure Of INTEREST- BEARING BANK BORROWINGS SECURED [Line Items]    
Borrowings ¥ 0 ¥ 0