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PREPAID AND OTHER CURRENT ASSETS, NET (Details) ¥ in Thousands, $ in Thousands | Jun. 30, 2021 USD ($) | Jun. 30, 2021 CNY (¥) | Dec. 31, 2020 CNY (¥)
--- | --- | --- | ---
Amount due from Xihua Group |  | ¥ 49,800 | ¥ 49,800
Receivable from Zhenjiang operating rights |  | 35,000 | 35,000
Prepaid input value-added tax |  | 3,938 | 4,069
Staff advances |  | 3,175 | 3,723
Rental deposits |  | 2,860 | 2,826
Prepayments to suppliers |  | 8,421 | 9,209
Subsidy receivable |  | 4,522 | 4,567
Others |  | 14,111 | 8,510
Total before allowance for doubtful accounts |  | 121,827 | 117,704
Less: allowance for doubtful accounts |  | (70) | (70)
Total | $ 18,858 | ¥ 121,757 | ¥ 117,634

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