CONDENSED FINANCIAL INFORMATION OF THE PARENT COMPANY - Additional information (Details) - CNY (¥) ¥ in Thousands	Sep. 30, 2021	Sep. 30, 2020
CONDENSED FINANCIAL INFORMATION OF THE PARENT COMPANY
Amount of Restricted Net Assets for Consolidated and Unconsolidated Subsidiaries	¥ 45,457	¥ 45,457

Amount of restricted net assets of consolidated and unconsolidated subsidiaries as of the end of the most recently completed fiscal year.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(e)(3)(ii))
-URI https://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690

Name:	us-gaap_AmountOfRestrictedNetAssetsForConsolidatedAndUnconsolidatedSubsidiaries
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant