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CONSOLIDATED BALANCE SHEETS (Parenthetical) ¥ in Thousands, $ in Thousands | Dec. 31, 2019 USD ($) shares | Dec. 31, 2019 CNY (¥) shares | Dec. 31, 2018 $ / shares | Dec. 31, 2018 CNY (¥) shares
--- | --- | --- | --- | ---
Current liabilities |  |  |  |
Short-term bank borrowings | $ 70,384 | ¥ 490,000 |  | ¥ 395,000
Accounts payable | 272,575 | 1,897,611 |  | 1,128,248
Customers' refundable fees (including customers' refundable fees of consolidated VIE without recourse to the Company of RMB41,697 and RMB44,916 as of December 31, 2018 and 2019, respectively. Note 1) | 6,452 | 44,916 |  | 41,697
Income tax payables | 1 | 7 |  | 369
Non-current liabilities |  |  |  |
Income tax payables | $ 1,711 | ¥ 11,910 |  | ¥ 12,646
Deficit: |  |  |  |
Ordinary shares, par value | $ / shares |  |  | $ 0.0000001 |
Ordinary shares, shares authorized |  |  |  | 2,275,948,587
Ordinary shares, shares issued |  |  |  | 945,712,030
Ordinary shares, shares outstanding |  |  |  | 945,712,030
Series A-1 Convertible Preferred Shares, par value | $ / shares |  |  | 0.0000001 |
Series A-1 Convertible Preferred Shares, shares authorized |  |  |  | 102,102,318
Series A-1 Convertible Preferred Shares, shares issued |  |  |  | 102,102,318
Series A-1 Convertible Preferred Shares, shares outstanding |  |  |  | 102,102,318
Series A-2 Redeemable Convertible Preferred Shares |  |  |  |
Mezzanine equity |  |  |  |
Redeemable Convertible Preferred Shares, par value | $ / shares |  |  | 0.0000001 |
Redeemable Convertible Preferred Shares, shares authorized |  |  |  | 148,147,900
Redeemable Convertible Preferred Shares, shares issued |  |  |  | 148,147,900
Redeemable Convertible Preferred Shares, shares outstanding |  |  |  | 148,147,900
Redeemable Convertible Preferred Shares, redemption value | ¥ |  |  |  | ¥ 102,743
Redeemable Convertible Preferred Shares, liquidation value | ¥ |  |  |  | ¥ 1,327,471
Series B Redeemable Convertible Preferred Shares |  |  |  |
Mezzanine equity |  |  |  |
Redeemable Convertible Preferred Shares, par value | $ / shares |  |  | 0.0000001 |
Redeemable Convertible Preferred Shares, shares authorized |  |  |  | 177,834,496
Redeemable Convertible Preferred Shares, shares issued |  |  |  | 177,834,496
Redeemable Convertible Preferred Shares, shares outstanding |  |  |  | 177,834,496
Redeemable Convertible Preferred Shares, redemption value | ¥ |  |  |  | ¥ 463,266
Redeemable Convertible Preferred Shares, liquidation value | ¥ |  |  |  | ¥ 1,818,209
Series C Redeemable Convertible Preferred Shares |  |  |  |
Mezzanine equity |  |  |  |
Redeemable Convertible Preferred Shares, par value | $ / shares |  |  | 0.0000001 |
Redeemable Convertible Preferred Shares, shares authorized |  |  |  | 286,959,017
Redeemable Convertible Preferred Shares, shares issued |  |  |  | 286,959,017
Redeemable Convertible Preferred Shares, shares outstanding |  |  |  | 286,959,017
Redeemable Convertible Preferred Shares, redemption value | ¥ |  |  |  | ¥ 2,295,740
Redeemable Convertible Preferred Shares, liquidation value | ¥ |  |  |  | 3,950,470
Class A & Class B Ordinary shares |  |  |  |
Deficit: |  |  |  |
Ordinary shares, shares authorized | 5,000,000,000 | 5,000,000,000 |  |
Class A ordinary shares |  |  |  |
Deficit: |  |  |  |
Ordinary shares, par value | $ / shares |  |  | 0.0000001 |
Ordinary shares, shares issued | 1,203,322,178 | 1,203,322,178 |  |
Ordinary shares, shares outstanding | 1,203,322,178 | 1,203,322,178 |  |
Class B Ordinary shares |  |  |  |
Deficit: |  |  |  |
Ordinary shares, par value | $ / shares |  |  | $ 0.0000001 |
Ordinary shares, shares issued | 619,938,058 | 619,938,058 |  |
Ordinary shares, shares outstanding | 619,938,058 | 619,938,058 |  |
VIE |  |  |  |
Current liabilities |  |  |  |
Short-term bank borrowings | ¥ |  | ¥ 490,000 |  | 395,000
Accounts payable | ¥ |  | 1,897,219 |  | 1,107,836
Customers' refundable fees (including customers' refundable fees of consolidated VIE without recourse to the Company of RMB41,697 and RMB44,916 as of December 31, 2018 and 2019, respectively. Note 1) | ¥ |  | 44,916 |  | 41,697
Accrued expenses and other payables | ¥ |  | 283,749 |  | 392,251
Income tax payables | ¥ |  | 7 |  | 297
Non-current liabilities |  |  |  |
Income tax payables | ¥ |  | ¥ 11,061 |  | ¥ 11,916

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