RIGHT-OF-USE ASSETS AND LEASES LIABILITIES - Lease liabilities (Details) - CNY (¥) ¥ in Thousands	Dec. 31, 2020	Dec. 31, 2019	Jan. 01, 2019
RIGHT-OF-USE ASSETS AND LEASES LIABILITIES
Lease liabilities - current	¥ 13,431	¥ 5,793	¥ 19,380
Lease liabilities - noncurrent	46,728
Total lease liabilities	¥ 60,159	¥ 5,793	¥ 19,380

The amount of current lease liabilities. [Refer: Lease liabilities]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 16
-IssueDate 2020-01-01
-Paragraph 47
-Subparagraph b
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2020-en-r&anchor=para_47_b&doctype=Standard
-URIDate 2020-01-01

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Balance Type:	credit
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- References

No definition available.

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- Definition

The amount of liabilities related to the entity's leases. Lease is a contract, or part of a contract, that conveys the right to use an underlying asset for a period of time in exchange for consideration.

+ References

+ Details

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Period Type:	instant

- Definition

The amount of non-current lease liabilities. [Refer: Lease liabilities]

+ References

+ Details

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Data Type:	xbrli:monetaryItemType
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Period Type:	instant