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Income Taxes (Details) - Schedule of deferred tax assets and deferred tax liability - CNY (¥) ¥ in Thousands | Dec. 31, 2020 | Dec. 31, 2019
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Schedule of deferred tax assets and deferred tax liability [Abstract] |  |
Allowance for doubtful accounts | ¥ 5,084 | ¥ 2,126
Impairment loss on long-lived assets | 27,289 | 32,263
Impairment loss on long-term investments | 16,371 | 8,953
Accrued Liabilities | 10,418 |
Deductible temporary difference related to advertising expenses | 4,561 | 3,773
Deferred subsidy income | 821 | 1,044
Net operating loss carrying forwards | 291,750 | 231,357
Total deferred tax assets | 356,294 | 279,516
Less: valuation allowance | (356,294) | (279,516)
Deferred tax assets, net |  |

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