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CONSOLIDATED BALANCE SHEETS (Parenthetical) ¥ in Thousands, $ in Thousands | Dec. 31, 2019 USD ($) $ / shares shares | Dec. 31, 2019 CNY (¥) shares | Dec. 31, 2018 CNY (¥) shares
--- | --- | --- | ---
Accounts receivable, allowance | $ 1,027 | ¥ 7,147 | ¥ 3,585
Accounts receivable, due from related party | 0 | 0 | 5,099
Reserve for prepayments and other current assets | 1,295 | 9,013 | 14,798
Prepayments and other current assets, due from related party | 550 | 3,833 | 15,572
Reserve for deposits of non-current assets | 13,396 | 93,260 | 30,860
Current liabilites | 90,129 | 627,451 | 870,265
Accrued Expenses and Other Liabilities Related Party Current | 0 | 0 | 15,985
Long-term bank and other borrowings, current portion, loan from related party | 1,454 | 10,120 | 0
Non-current liabilities | $ (255,789) | ¥ (1,780,756) | ¥ (1,441,248)
Treasury stock, shares | 12,111,537 | 12,111,537 | 12,175,155
VIE and Subsidiaries |  |  |
Current liabilites | $ 0 | ¥ 0 | ¥ 46,013
Non-current liabilities | $ 0 | ¥ 0 | ¥ 454,424
Common Class A [Member] |  |  |
Ordinary shares, par value per share | $ / shares | $ 0.0001 |  |
Ordinary shares, shares authorized | 500,000,000 | 500,000,000 | 500,000,000
Ordinary shares, shares issued | 96,565,584 | 96,565,584 | 96,565,584
Ordinary shares, shares outstanding | 84,454,047 | 84,454,047 | 84,390,429
Common Class B [Member] |  |  |
Ordinary shares, par value per share | $ / shares | $ 0.0001 |  |
Ordinary shares, shares authorized | 45,787,948 | 45,787,948 | 45,787,948
Ordinary shares, shares issued | 45,787,948 | 45,787,948 | 45,787,948
Ordinary shares, shares outstanding | 45,787,948 | 45,787,948 | 45,787,948

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