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Parent only financial information - Condensed Balance Sheets (Details) ¥ in Thousands, $ in Thousands | Dec. 31, 2022 CNY (¥) | Dec. 31, 2022 USD ($) | Jan. 01, 2022 CNY (¥) | Dec. 31, 2021 CNY (¥) | Dec. 31, 2021 USD ($)
--- | --- | --- | --- | --- | ---
Current assets |  |  |  |  |  |
Prepayments and other assets |  | ¥ 412,934 | $ 59,870 | ¥ 195,617 | ¥ 200,075 |
Amounts due from related parties |  | 911,589 | 132,168 |  | 41,278 |
Total current assets |  | 3,281,075 | 475,711 |  | 2,456,638 |
Non-current assets |  |  |  |  |  |
Total non-current assets |  | 969,952 | 140,628 |  | 1,510,064 |
Total assets |  | 4,251,027 | 616,339 |  | 3,966,702 |
Current liabilities |  |  |  |  |  |
Accounts payable - third parties |  | 1,024,194 | 148,494 |  | 649,967 |
Accrued Liabilities and Other Liabilities |  | 738,603 | 107,087 |  | 458,979 |
Accrued expenses and other current liabilities |  | 738,603 | 107,087 |  | 458,979 |
Total current liabilities |  | 3,599,402 | 521,863 |  | 3,022,657 |
Non-current liabilities |  |  |  |  |  |
Convertible Notes Payable, Noncurrent |  | 439,869 | 63,775 |  |  |
Total non-current liabilities |  | 828,818 | 120,167 |  | 489,358 |
Total liabilities |  | 4,428,220 | 642,030 |  | 3,512,015 |
MEZZANINE EQUITY |  |  |  |  |  |
Total mezzanine equity |  |  |  |  | 4,563,407 |
SHAREHOLDERS' DEFICIT |  |  |  |  |  |
Ordinary Shares | [1] |  |  |  | 7 |
Additional paid-in capital |  | 5,919,660 | 858,270 |  |  |
Accumulated deficit |  | (5,710,977) | (828,014) |  | (4,109,041) |
Accumulated other comprehensive income (loss) |  | (385,886) | (55,948) |  | 6,048 |
Total deficit attributable to ordinary shareholders |  | (177,193) | (25,691) |  | (4,102,986) |
Liabilities, mezzanine equity and shareholders' deficit |  | 4,251,027 | 616,339 |  | 3,966,702 |
Series Angel Redeemable Convertible Preferred Shares |  |  |  |  |  |
MEZZANINE EQUITY |  |  |  |  |  |
Redeemable convertible preferred shares, redemption value |  | 0 |  |  | 283,585 |
Series A Redeemable Convertible Preferred Shares |  |  |  |  |  |
MEZZANINE EQUITY |  |  |  |  |  |
Redeemable convertible preferred shares, redemption value |  | 0 |  |  | 1,429,313 |
Series B Redeemable Convertible Preferred Shares |  |  |  |  |  |
MEZZANINE EQUITY |  |  |  |  |  |
Redeemable convertible preferred shares, redemption value |  | 0 |  |  | 1,117,317 |
Subscription receivable from Convertible Preferred Shares |  |  |  |  | 159,392 | $ 25,000
Class A Ordinary Shares |  |  |  |  |  |
SHAREHOLDERS' DEFICIT |  |  |  |  |  |
Ordinary Shares | [1] | 9 | $ 1 |  |  |
Class B Ordinary Shares |  |  |  |  |  |
SHAREHOLDERS' DEFICIT |  |  |  |  |  |
Ordinary Shares | [1] | 1 |  |  |  |
Parent company |  |  |  |  |  |
Current assets |  |  |  |  |  |
Cash |  | 119,022 |  |  | 158,755 |
Prepayments and other assets |  | 35 |  |  | 5,751 |
Amounts due from related parties |  | 4,168,615 |  |  | 3,217,624 |
Total current assets |  | 4,287,672 |  |  | 3,382,130 |
Non-current assets |  |  |  |  |  |
Investment securities |  | 69,319 |  |  |  |
Total non-current assets |  | 69,319 |  |  |  |
Total assets |  | 4,356,991 |  |  | 3,382,130 |
Current liabilities |  |  |  |  |  |
Accounts payable - third parties |  |  |  |  | 108 |
Accrued Liabilities and Other Liabilities |  | 146,507 |  |  |  |
Accrued expenses and other current liabilities |  | 146,507 |  |  |  |
Amounts due to related parties |  | 18,925 |  |  | 85,390 |
Share of losses in excess of investments in subsidiaries and VIEs |  | 3,928,883 |  |  | 2,866,711 |
Total current liabilities |  | 4,094,315 |  |  | 2,952,209 |
Non-current liabilities |  |  |  |  |  |
Convertible Notes Payable, Noncurrent |  | 439,869 |  |  |  |
Total non-current liabilities |  | 439,869 |  |  |  |
Total liabilities |  | 4,534,184 |  |  | 2,952,209 |
MEZZANINE EQUITY |  |  |  |  |  |
Subscription receivable from Convertible Preferred Shares |  |  |  |  | (159,392) |
Total mezzanine equity |  |  |  |  | 4,532,907 |
SHAREHOLDERS' DEFICIT |  |  |  |  |  |
Additional paid-in capital |  | 5,919,660 |  |  |  |
Accumulated deficit |  | (5,710,977) |  |  | (4,109,041) |
Accumulated other comprehensive income (loss) |  | (385,886) |  |  | 6,048 |
Total deficit attributable to ordinary shareholders |  | (177,193) |  |  | (4,102,986) |
Liabilities, mezzanine equity and shareholders' deficit |  | 4,356,991 |  |  | 3,382,130 |
Parent company | Series Angel Redeemable Convertible Preferred Shares |  |  |  |  |  |
MEZZANINE EQUITY |  |  |  |  |  |
Redeemable convertible preferred shares, redemption value |  |  |  |  | 283,585 |
Parent company | Series A Redeemable Convertible Preferred Shares |  |  |  |  |  |
MEZZANINE EQUITY |  |  |  |  |  |
Redeemable convertible preferred shares, redemption value |  |  |  |  | 1,429,313 |
Parent company | Series A+ Redeemable Convertible Preferred Shares |  |  |  |  |  |
MEZZANINE EQUITY |  |  |  |  |  |
Redeemable convertible preferred shares, redemption value |  |  |  |  | 1,386,671 |
Parent company | Series A++ Redeemable Convertible Preferred Shares |  |  |  |  |  |
MEZZANINE EQUITY |  |  |  |  |  |
Redeemable convertible preferred shares, redemption value |  |  |  |  | 475,413 |
Parent company | Series B Redeemable Convertible Preferred Shares |  |  |  |  |  |
MEZZANINE EQUITY |  |  |  |  |  |
Redeemable convertible preferred shares, redemption value |  |  |  |  | ¥ 1,117,317 |
Parent company | Class A Ordinary Shares |  |  |  |  |  |
SHAREHOLDERS' DEFICIT |  |  |  |  |  |
Ordinary Shares |  | 9 |  |  |  |
Parent company | Class B Ordinary Shares |  |  |  |  |  |
SHAREHOLDERS' DEFICIT |  |  |  |  |  |
Ordinary Shares |  | ¥ 1 |  |  |  |
[1] | Shares outstanding for all periods reflect the adjustment for Recapitalization.

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- Definition Aggregate monetary value of a new issue of securities which have been allocated to investors to buy. When security is sold on a subscription basis, the issuer does not initially receive the total proceeds. In general, the issuer does not issue the security to the investor until it receives the entire proceeds. Temporary equity is a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable. Includes any type of security that is redeemable at a fixed or determinable price or on a fixed or determinable date or dates, is redeemable at the option of the holder, or has conditions for redemption which are not solely within the control of the issuer. If convertible, the issuer does not control the actions or events necessary to issue the maximum number of shares that could be required to be delivered under the conversion option if the holder exercises the option to convert the stock to another class of equity. If the security is a warrant or a rights issue, the warrant or rights issue is considered to be temporary equity if the issuer cannot demonstrate that it would be able to deliver upon the exercise of the option by the holder in all cases. Includes stock with put option held by ESOP and stock redeemable by holder only in the event of a change in control of the issuer. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(27)(b)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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