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INCOME TAXES (Details) - CNY (¥) ¥ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018
Income Taxes |  |
Provision for income taxes |  | ¥ 8
Hong Kong |  |
Income Taxes |  |
Provision for income taxes | ¥ 0 |
Reconciliation between the effective income tax rate and the PRC statutory income tax rate (as a percent) |  |
Statutory tax rate | 16.50% |
PRC |  |
Income Taxes |  |
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate for High and New Technology Enterprises, Percent | 15.00% |
Reconciliation between the effective income tax rate and the PRC statutory income tax rate (as a percent) |  |
Statutory tax rate | 25.00% | 25.00%
Tax effect of other expenses that are not deductible in determining taxable profit | (3.00%) | (9.00%)
Effect of changing tax rate due to high-tech enterprise qualification | (11.00%) |
Effect of enacted tax rate change | 5.00% |
Effect of change in valuation allowance | (16.00%) | (16.00%)
Effective tax rate | 0.00% | 0.00%

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