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Consolidated Balance Sheets (Parenthetical) ¥ in Thousands, $ in Thousands | Dec. 31, 2021 CNY (¥) shares | Dec. 31, 2021 USD ($) $ / shares shares | Dec. 31, 2020 CNY (¥) shares | Dec. 31, 2020 $ / shares
--- | --- | --- | --- | ---
Accounts payable | ¥ 80,793 | $ 12,678 | ¥ 78,267 |
Deferred revenue | 20,657 | 3,242 | 17,001 |
Salary and welfare payable | 123,075 | 19,312 | 93,288 |
Taxes payable | 5,564 | 872 | 5,809 |
Short-term loans | 68,999 | 10,827 | 39,508 |
Lease liabilities due within one year | 13,929 | 2,186 | 3,709 |
Accrued expenses and other current liabilities | 53,486 | 8,392 | 51,047 |
Lease liabilities | 17,076 | 2,680 | 587 |
Other non-current liabilities | ¥ 4,452 | $ 699 | ¥ 5,411 |
Ordinary Shares A [Member] |  |  |  |
Ordinary shares, par value | $ / shares |  |  |  | $ 0.0001
Ordinary shares, shares authorized | shares | 1,268,785,000 | 1,268,785,000 | 1,268,785,000 |
Ordinary shares, shares issued | shares | 798,962,260 | 798,962,260 | 710,249,520 |
Ordinary shares, shares outstanding | shares | 782,801,250 | 782,801,250 | 693,103,450 |
Ordinary Shares B [Member] |  |  |  |
Ordinary shares, par value | $ / shares |  | $ 0.0001 |  | $ 0.0001
Ordinary shares, shares authorized | shares | 231,215,000 | 231,215,000 | 231,215,000 |
Ordinary shares, shares issued | shares | 231,215,000 | 231,215,000 | 231,215,000 |
Ordinary shares, shares outstanding | shares | 231,215,000 | 231,215,000 | 231,215,000 |
Variable Interest Entity Primary Beneficiary [Member] |  |  |  |
Accounts payable | ¥ 70,639 |  | ¥ 73,986 |
Deferred revenue | 19,100 |  | 16,200 |
Salary and welfare payable | 116,204 |  | 88,464 |
Short-term loans | 68,999 |  | 39,508 |
Lease liabilities due within one year | 5,767 |  | 3,542 |
Accrued expenses and other current liabilities | 42,803 |  | 41,559 |
Lease liabilities | 4,132 |  | 587 |
Other non-current liabilities | 0 |  | 0 |
Variable Interest Entity, Not Primary Beneficiary, Aggregated Disclosure [Member] |  |  |  |
Salary and welfare payable | 116,200 |  | 88,500 |
Taxes payable | ¥ 4,900 |  | ¥ 4,600 |

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