CONDENSED CONSOLIDATED BALANCE SHEETS ¥ in Thousands, $ in Thousands	Sep. 30, 2021 USD ($)	Dec. 31, 2020 USD ($)
Current assets:
Cash and cash equivalents	$ 1,383,310	$ 1,381,950
Short-term restricted cash	330	307
Short-term investments	2,533,617	3,268,725
Accounts receivable, net	129,584	60,403
Inventories	150,979	89,293
Prepaid expenses and other current assets	235,015	160,012
Total current assets	4,432,835	4,960,690
Long-term restricted cash	6,056	7,748
Property, plant and equipment, net	450,788	357,686
Operating lease right-of-use assets	100,585	90,581
Intangible assets, net	14,104	5,000
Deferred tax assets	106,844	65,962
Other non-current assets	175,122	113,090
Total non-current assets	853,499	640,067
Total assets	5,286,334	5,600,757
Current liabilities:
Accounts payable	206,203	231,957
Accrued expenses and other payables	389,874	346,144
Deferred revenue, current portion	72,626	0
Tax payable	20,878	20,380
Operating lease liabilities, current portion	18,644	13,895
Research and development cost share liability, current portion	153,838	127,808
Short-term debt	442,372	335,015
Total current liabilities	1,304,435	1,075,199
Non-current liabilities:
Long-term bank loans	200,906	183,637
Deferred revenue, non-current portion	52,272	0
Operating lease liabilities, non-current portion	37,613	29,417
Deferred tax liabilities	13,266	10,792
Research and development cost share liability, non-current portion	266,163	375,040
Other long-term liabilities	54,606	57,429
Total non-current liabilities	624,826	656,315
Total liabilities	1,929,261	1,731,514
Commitments and contingencies
Equity:
Ordinary shares, US$0.0001 par value per share; 9,500,000,000 shares authorized; 1,213,234,201 and 1,190,821,941 shares issued and outstanding as of September 30, 2021 and December 31, 2020, respectively	121	118
Additional paid-in capital	7,724,822	7,414,932
Accumulated other comprehensive income	12,580	6,942
Accumulated deficit	(4,380,450)	(3,552,749)
Total equity	3,357,073	3,869,243
Total liabilities and equity	$ 5,286,334	$ 5,600,757