Consolidated Balance Sheets - USD ($)	Dec. 31, 2022	Dec. 31, 2021
Current assets
Cash and cash equivalents	$ 1,008,470,000	$ 964,100,000
Short-term investments	0	445,000,000
Accounts receivable (net of allowance for credit loss of $11 as of December 31, 2022 and 2021, respectively)	39,963,000	47,474,000
Notes receivable	8,608,000	7,335,000
Inventories, net	31,621,000	18,951,000
Prepayments and other current assets	35,674,000	18,021,000
Total current assets	1,124,336,000	1,500,881,000
Restricted cash, non-current	803,000	803,000
Long-term investments (including the fair value measured investment of $6,431 and $15,383 as of December 31, 2022 and 2021, respectively)	6,431,000	15,605,000
Prepayments for equipment	1,396,000	989,000
Property and equipment, net	57,863,000	43,102,000
Operating lease right-of-use assets	19,512,000	14,189,000
Land use rights, net	6,892,000	7,811,000
Intangible assets, net	1,511,000	1,848,000
Long-term deposits	1,396,000	870,000
Value added tax recoverable	0	23,858,000
Total assets	1,220,140,000	1,609,956,000
Current liabilities
Accounts payable	65,974,000	126,163,000
Current operating lease liabilities	7,050,000	5,927,000
Other current liabilities	66,818,000	60,811,000
Total current liabilities	139,842,000	192,901,000
Deferred income	21,360,000	27,486,000
Non-current operating lease liabilities	13,343,000	9,613,000
Total liabilities	174,545,000	230,000,000
Commitments and contingencies (Note 20)
Shareholders’ equity
Ordinary shares (par value of $0.000006 per share; 5,000,000,000 shares authorized, 962,455,850 and 955,363,980 shares issued as of December 31, 2022 and 2021, respectively; 960,219,570 and 954,981,050 shares issued and outstanding as of December 31, 2022 and 2021, respectively)	6,000	6,000
Additional paid-in capital	2,893,120,000	2,825,948,000
Accumulated deficit	(1,861,360,000)	(1,418,074,000)
Accumulated other comprehensive income (loss)	25,685,000	(23,645,000)
Treasury stock (at cost, 2,236,280 and 382,930 shares as of December 31, 2022 and 2021, respectively)	(11,856,000)	(4,279,000)
Total shareholders’ equity	1,045,595,000	1,379,956,000
Total liabilities and shareholders’ equity	$ 1,220,140,000	$ 1,609,956,000