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Prepaid Expenses and Other Current Assets (Details) - Schedule of prepaid expenses and other current assets ¥ in Thousands, $ in Thousands | Jun. 30, 2021 USD ($) | Dec. 31, 2020 CNY (¥) | Dec. 31, 2020 USD ($) | Dec. 31, 2019 CNY (¥)
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Schedule of prepaid expenses and other current assets [Abstract] |  |  |  |  |
Advances to suppliers(i) | [1] | $ 79,971 | ¥ 63,513 | $ 63,513 | ¥ 41,890
Prepaid VAT |  | 50,077 | 53,399 | 53,399 | 48,175
Prepaid operating expenses and deposits |  | 33,097 |  | 22,406 |
Others |  | 15,322 | ¥ 23,215 | 24,083 | ¥ 19,493
Total |  | $ 178,467 |  | $ 163,401 |
[1] | Advances to suppliers mainly includes prepaid advertising costs, occupancy maintenance and facilities management expenses, as well as prepayment to construction and design suppliers.

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