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v3.21.2

OTHER NON-CURRENT ASSETS - Additional information (Details) ¥ in Thousands, $ in Thousands | 1 Months Ended | 3 Months Ended | 6 Months Ended | 24 Months Ended |
--- | --- | --- | --- | --- | ---
Apr. 30, 2019 CNY (¥) | Jun. 30, 2021 USD ($) | Jun. 30, 2021 CNY (¥) | Jun. 30, 2020 CNY (¥) | Jun. 30, 2021 USD ($) | Jun. 30, 2021 CNY (¥) | Jun. 30, 2020 CNY (¥) | Dec. 31, 2020 CNY (¥) | Apr. 08, 2020
Additional information |  |  |  |  |  |  |  |  |
Long-term receivables |  |  | ¥ 13,723 |  |  | ¥ 13,723 |  |  |
Interest income |  | $ 302 | 1,948 | ¥ 2,145 | $ 621 | 4,008 | ¥ 4,135 |  |
Dongyuan |  |  |  |  |  |  |  |  |
Additional information |  |  |  |  |  |  |  |  |
Annual interest rate of loan agreements |  |  |  |  |  |  |  | 5.00% |
Outstanding principal |  |  | 42,600 |  |  | 42,600 |  |  |
Interest receivable |  |  | 2,624 |  |  | 2,624 |  |  |
Hebi School |  |  |  |  |  |  |  |  |
Additional information |  |  |  |  |  |  |  |  |
Ownership (as a percent) | 51.00% |  |  |  |  |  |  |  | 51.00%
Long-term Deposit | ¥ 40,000 |  | 40,000 |  |  | 40,000 |  | ¥ 40,000 |
Interest on security deposit, percentage | 10 |  |  |  |  |  |  |  |
Interest On Security Deposit, Value |  |  |  |  |  | 7,641 |  |  |
Allowance upon deposit loans and interest receivable |  |  | ¥ 0 |  |  | ¥ 0 |  |  |

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