Consolidated Balance Sheets - USD ($)	Dec. 31, 2023	Dec. 31, 2022
Current assets
Cash and cash equivalents	$ 790,151,000	$ 1,008,470,000
Short-term investments	16,300,000	0
Accounts receivable (net of allowance for credit loss of $17 and $11 as of December 31, 2023 and 2022, respectively)	59,199,000	39,963,000
Notes receivable	6,134,000	8,608,000
Inventories, net	44,827,000	31,621,000
Prepayments and other current assets	22,995,000	35,674,000
Total current assets	939,606,000	1,124,336,000
Restricted cash, non-current	1,113,000	803,000
Long-term investments	9,220,000	6,431,000
Prepayments for equipment	111,000	1,396,000
Property and equipment, net	53,734,000	57,863,000
Operating lease right-of-use assets	14,844,000	19,512,000
Land use rights, net	3,069,000	6,892,000
Intangible assets, net	13,389,000	1,511,000
Long-term deposits	1,209,000	1,396,000
Total assets	1,036,295,000	1,220,140,000
Current liabilities
Accounts payable	112,991,000	65,974,000
Current operating lease liabilities	7,104,000	7,050,000
Other current liabilities	82,972,000	66,818,000
Total current liabilities	203,067,000	139,842,000
Deferred income	28,738,000	21,360,000
Non-current operating lease liabilities	8,047,000	13,343,000
Other non-current liabilities	325,000	0
Total liabilities	240,177,000	174,545,000
Commitments and contingencies (Note 20)
Shareholders’ equity
Ordinary shares (par value of $0.000006 per share; 5,000,000,000 shares authorized, 977,151,270 and 962,455,850 shares issued as of December 31, 2023 and 2022, respectively; 972,239,070 and 960,219,570 shares issued and outstanding as of December 31, 2023 and 2022, respectively)	6,000	6,000
Additional paid-in capital	2,975,302,000	2,893,120,000
Accumulated deficit	(2,195,980,000)	(1,861,360,000)
Accumulated other comprehensive income	37,626,000	25,685,000
Treasury stock (at cost, 4,912,200 and 2,236,280 shares as of December 31, 2023 and 2022, respectively)	(20,836,000)	(11,856,000)
Total shareholders’ equity	796,118,000	1,045,595,000
Total liabilities and shareholders’ equity	$ 1,036,295,000	$ 1,220,140,000