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UNAUDITED CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) ¥ in Thousands, $ in Thousands | Jun. 30, 2021 CNY (¥) shares | Jun. 30, 2021 USD ($) $ / shares shares | Dec. 31, 2020 CNY (¥) shares | Dec. 31, 2020 $ / shares
--- | --- | --- | --- | ---
Short-term borrowings | ¥ 19,498 | $ 3,020 | ¥ 10,000 |
Deferred revenue | 136,274 | 21,106 | 163,699 |
Accounts payable | 21,425 | 3,320 | 19,423 |
Accrued and other liabilities | 203,207 | 31,473 | 209,590 |
Income taxes payable, current | 185,105 | 28,669 | 184,638 |
Amounts due to related parties | 2,771 | 429 | 2,543 |
Operating lease liability, current | 49,198 | 7,620 | 53,702 |
Long-term borrowing |  |  | 9,594 |
Other non-current liabilities | 304 | 47 | 292 |
Income taxes payable, non-current | 34,322 | 5,316 | 34,763 |
Operating lease liability, non-current | ¥ 207,877 | $ 32,196 | ¥ 220,319 |
Preferred shares, par value (in dollars per share) | $ / shares |  | $ 0.003 |  | $ 0.003
Preferred shares, shares authorized | shares | 1,666,667 | 1,666,667 | 1,666,667 |
Preferred shares, shares issued | shares | 0 | 0 | 0 |
Preferred shares, shares outstanding | shares | 0 | 0 | 0 |
Class A Ordinary Shares [Member] |  |  |  |
Ordinary shares, par value (in dollars per share) | $ / shares |  | $ 0.003 |  | 0.003
Ordinary shares, shares authorized | shares | 66,666,667 | 66,666,667 | 66,666,667 |
Ordinary shares, shares issued | shares | 41,948,276 | 41,948,276 | 41,923,276 |
Ordinary shares, shares outstanding | shares | 41,948,276 | 41,948,276 | 41,923,276 |
Class C Ordinary Shares [Member] |  |  |  |
Ordinary shares, par value (in dollars per share) | $ / shares |  | $ 0.003 |  | $ 0.003
Ordinary shares, shares authorized | shares | 8,333,333 | 8,333,333 | 8,333,333 |
Ordinary shares, shares issued | shares | 4,708,415 | 4,708,415 | 4,708,415 |
Ordinary shares, shares outstanding | shares | 4,708,415 | 4,708,415 | 4,708,415 |
Variable interest entities and subsidiaries of VIEs |  |  |  |
Short-term borrowings | ¥ 10,000 |  | ¥ 10,000 |
Deferred revenue | 132,947 |  | 158,735 |
Accounts payable | 10,346 |  | 10,682 |
Accrued and other liabilities | 168,420 |  | 165,706 |
Income taxes payable, current | 180,666 |  | 180,070 |
Amounts due to related parties | 2,771 |  | 2,543 |
Operating lease liability, current | 24,014 |  | 27,962 |
Long-term borrowing | 0 |  | 0 |
Other non-current liabilities | 95 |  | 188 |
Income taxes payable, non-current | 34,322 |  | 34,763 |
Operating lease liability, non-current | ¥ 71,459 |  | ¥ 74,725 |

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