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Consolidated Statements Of Cash Flows
¥ in Thousands, $ in Thousands
 12 Months Ended
Dec. 31, 2021
CNY (¥)
Dec. 31, 2021
USD ($)
Dec. 31, 2020
CNY (¥)
Dec. 31, 2019
CNY (¥)
Operating activities:        
Net loss ¥ (6,429,059) $ (1,008,860) ¥ (3,176,914) ¥ (1,873,383)
Adjustments to reconcile net income to net cash provided by operating activities:        
Depreciation and amortization 213,082 33,437 115,354 34,734
Accretion related to convertible notes 0 0 21,334 39,477
Foreign exchange loss/(gain) (7,689) (1,207) 35,049 4,026
Share-based compensation 315,362 49,487 153,110 1,990
Loss on disposal of property and equipment 35,483 5,568 16,481 0
Extinguishment losses 0 0 29,141 0
Changes in fair value of warrant liabilities 44,457 6,976 (11,450) 100,672
Changes in operating assets and liabilities:        
Accounts receivable (152,714) (23,964) (26,508) (11,836)
Inventories (151,041) (23,702) (224,983) (131,712)
Advance to suppliers (49,578) (7,780) (14,580) (1,115)
Prepayments and other current assets (363,965) (57,111) (18,345) (55,657)
Operating lease right-of-use assets (742,349) (116,491) (1,015,534) (353,240)
Other non-current assets (49,175) (7,717) (80,029) (29,250)
Accounts payable 478,676 75,115 804,769 640,895
Salary and welfare payable 107,780 16,913 93,921 30,375
Advances from customers and deferred revenue 103,076 16,175 70,111 66,663
Accrued expenses and other current liabilities 164,625 25,833 182,376 222,760
Operating lease liabilities 747,118 117,239 991,000 350,326
Other non-current liabilities 69,373 10,886    
Net cash used in operating activities (5,666,538) (889,203) (2,055,697) (964,275)
Investing activities:        
Purchases of property and equipment (451,608) (70,867) (248,476) (124,812)
Proceeds from disposal of property and equipment 547 86 1,165 0
Purchases of short-term investments (9,078,466) (1,424,609) (1,306,245) (1,053,459)
Maturities of short-term investments 5,454,087 855,864 542,437 992,642
Loans to related parties (2,500) (392) (10,100) 0
Repayment of loans from related parties 12,600 1,977    
Net cash used in investing activities (4,065,340) (637,941) (1,021,219) (185,629)
Financing activities:        
Proceeds from short-term borrowings 9,558,649 1,499,962 1,444,638 845,583
Repayment of short-term borrowings (7,672,124) (1,203,924) (210,117) (906,582)
Proceeds from long-term borrowings 0 0 128,000 60,000
Repayment of long-term borrowings (87,000) (13,652) (35,625) (7,500)
Issuance of redeemable convertible preferred shares, net of issuance costs 6,646,458 1,042,974 2,171,263 961,095
Issuance of convertible notes, net of issuance costs 0 0 0 516,999
Issuance of redeemable noncontrolling interests 30,000 4,708    
Proceeds from initial public offering, net of issuance costs 589,959 92,577    
Repurchase of ordinary shares (2,912) (457)    
Advance from shareholders 0 0 158,506 206,679
Repayment of advance from shareholders (20,390) (3,200)    
Net cash generated from financing activities 9,042,640 1,418,988 3,656,665 1,676,274
Effect of exchange rate changes on cash and cash equivalents and restricted cash (90,778) (14,245) (67,860) 34,670
Net increase/(decrease) in cash and cash equivalents and restricted cash (780,016) (122,401) 511,889 561,040
Cash and cash equivalents and restricted cash at the beginning of the year 1,450,448 227,607 938,559 377,519
Cash and cash equivalents and restricted cash at the end of the year 670,432 105,206 1,450,448 938,559
Supplemental disclosure of cash flow information:        
Interest paid 77,100 12,099 13,037 18,653
Non-cash investing and financing activities:        
Purchase of property and equipment included in accrued expenses and other liabilities 12,341 1,937 29,489 1,512
Extinguishment of convertible loans provided by the Founder in exchange for warrants 0 0 0 190,500
Issuance of Series C1 redeemable convertible preferred shares upon conversion of convertible notes 0 0 628,709 0
Issuance of Series B4-1 redeemable convertible preferred shares upon exercise of warrants held by the Founder 0 0 203,771 0
Issuance of Series B4 redeemable convertible preferred shares upon exercise of warrants 359,832 56,465    
Issuance of Series C1 redeemable convertible preferred shares upon the extinguishment of advance from shareholders 158,506 24,873    
Reconciliation of cash and cash equivalents and restricted cash:        
Cash and cash equivalents 662,768 104,003 1,376,153 938,559
Restricted cash 7,664 1,203 74,295 0
Cash and cash equivalents and restricted cash at the end of the year ¥ 670,432 $ 105,206 ¥ 1,450,448 ¥ 938,559