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v3.20.1

OTHER RECEIVABLES, NET - Summary of Movement of allowance for doubtful accounts (Details) | 6 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2019 USD ($) | Dec. 31, 2019 CNY (¥) | Dec. 31, 2018 CNY (¥) | Jun. 30, 2019 CNY (¥)
Other Receivables [Line Items] |  |  |  |
Charge to (reversal of) expense | $ 8,988 | ¥ 62,625 | ¥ 330,280 |
Third Party [Member] |  |  |  |
Other Receivables [Line Items] |  |  |  |
Beginning balance | 209,777 | 1,461,724 | ¥ 901,930 | ¥ 901,930
Charge to (reversal of) expense | (8,988) | (62,625) |  | 259,766
Add: reversal of bad debt allowance |  |  |  | 300,028
Ending balance | $ 200,789 | ¥ 1,399,099 |  | ¥ 1,461,724

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