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Related Parties Balances and Transactions (Details) ¥ in Thousands, $ in Thousands | 1 Months Ended | 12 Months Ended |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | ---
Aug. 31, 2020 CNY (¥) | Aug. 31, 2020 CNY (¥) | Dec. 31, 2020 CNY (¥) | Jun. 30, 2021 CNY (¥) | Jun. 30, 2021 USD ($) | Dec. 31, 2020 USD ($) | Oct. 31, 2020 CNY (¥) | Aug. 31, 2020 USD ($) | Dec. 31, 2019 CNY (¥)
Related Parties Balances and Transactions (Details) [Line Items] |  |  |  |  |  |  |  |  |
Equity holder percentage |  |  | 30.00% |  |  |  |  |  |
Annual interest rate |  |  | 4.785% | 4.785% | 4.785% | 4.785% |  |  |
Long Term Debt Description |  |  | During the year ended December 31, 2020, the Group repaid US$1,100, RMB 4,000, and RMB 750 of the USD1,100 loan, RMB 8,000 loan, and RMB 1,500 loan, respectively. |  |  |  |  |  |
Amount due |  |  | ¥ 92,737 | ¥ 50,901 | $ 7,884 | $ 14,213 |  |  | ¥ 43,251
Lease assets related parties |  |  | 17,622 | 16,793 |  |  |  |  | 106,558
Lease liabilities related parties |  |  | ¥ 24,566 | ¥ 28,335 |  |  |  |  | ¥ 111,248
Description of loan amount repaid |  |  | During the year ended December 31, 2020, the Group repaid US$1,100, RMB 4,000, and RMB 750, respectively. As of December 31, 2020, the amount due to Angela Bai was RMB4.75 million. |  |  |  |  |  |
Dr. Daqing Mao [Member] |  |  |  |  |  |  |  |  |
Related Parties Balances and Transactions (Details) [Line Items] |  |  |  |  |  |  |  |  |
Loan amount | ¥ 8,000 | ¥ 8,000 |  |  |  |  |  |  |
Angela Bai [Member] |  |  |  |  |  |  |  |  |
Related Parties Balances and Transactions (Details) [Line Items] |  |  |  |  |  |  |  |  |
Loan amount | ¥ 8,000 | ¥ 8,000 |  |  |  |  | ¥ 1,500 | $ 1,100 |
Maturity date, description | One loan had an interest rate of 8.0% per annum with a maturity date of January 4, 2021, and the other had an interest rate of 4.785% per annum with a maturity date of August 15, 2021 | One loan had an interest rate of 8.0% per annum with a maturity date of January 4, 2021, and the other had an interest rate of 4.785% per annum with a maturity date of August 15, 2021. |  |  |  |  |  |  |
Interest rate |  |  |  |  |  |  | 4.785% |  |
Amount due |  |  | ¥ 4,750 |  |  |  |  |  |
USD [Member] | Dr. Daqing Mao [Member] |  |  |  |  |  |  |  |  |
Related Parties Balances and Transactions (Details) [Line Items] |  |  |  |  |  |  |  |  |
Loan amount | $ |  |  |  |  |  |  |  | $ 1,100 |

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