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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Cash flows from operating activities: |  |  |
Net loss | $ (60,315) | $ (146,175) | $ (175,424)
Adjustments to reconcile net loss to net cash generated from operating activities: |  |  |
Share-based compensation | 65,216 | 69,019 | 66,089
Depreciation and amortization of property, equipment and software | 2,449 | 3,443 | 3,369
Amortization of right-of-use assets | 4,100 | 4,766 | 6,981
Allowance for doubtful receivables / allowance for credit losses | 1,595 | 288 | 1,030
Inventory write-downs | 3,298 | 4,067 | 1,806
Loss/(gain) on disposal of property, equipment and software | (221) | (219) | 365
Loss/(gain) on foreign currency exchange rates | (669) | (2,441) | 618
Investment loss/ (gain) | (697) | 2,167 |
Fair value change on short-term and long-term investments | 76 | (7,449) | 833
Impairment loss of long-term investments | 15,537 |  |
Changes in operating assets and liabilities: |  |  |
Accounts receivable | 1,046 | 20,241 | (23,430)
Notes receivable | (2,284) | (1,374) | 7,733
Inventories | 9,217 | 13,135 | (22,121)
Prepayments and other current assets | (1,251) | 8,893 | (13,134)
Other non-current assets | 290 | 639 | (89)
Accounts payable | 1,982 | (2,617) | (10,947)
Advance from customers | 4,143 | (3,455) | 4,010
Deferred revenue | 93 | (2,898) | 5,938
Income tax payable | 689 |  | (159)
Accruals and other payables | (1,372) | (24,280) | 19,109
Lease liabilities | (3,366) | (4,924) | (7,164)
Other non-current liability | (3,113) | (1,480) | 8,484
Net cash (used in)/generated from operating activities | 36,443 | (70,654) | (126,103)
Cash flows from investing activities: |  |  |
Payment for short-term investments | (327,244) | (1,257,697) | (468,705)
Proceeds from disposal of short-term investments | 853,703 | 543,790 | 385,549
Purchase of property, equipment and software | (1,499) | (710) | (6,193)
Proceeds from disposal of property, equipment and software | 509 | 464 | 28
Provision of bridge loans |  |  | (2,930)
Loan repayment |  |  | 628
Payment for long-term investments | (193,014) | (1,575) | (21,334)
Proceeds from other investing activities |  | 1,503 |
Net cash (used in)/generated from investing activities | 332,455 | (714,225) | (112,957)
Cash flows from financing activities: |  |  |
Proceeds from issuance of Class A ordinary shares upon Initial Public Offering and related over-allotment option, net of cost of issuance |  |  | 904,732
Payment for repurchase and cancellation of ordinary shares | (3,339) | (48,678) | (64,000)
Proceeds from issuance of ordinary shares prior to Initial Public Offering |  |  | 200,000
Proceeds from exercise of share options | 1,187 | 1,039 | 1,070
Proceeds from issuance of Class A ordinary shares upon the Dual Primary Listing, net of cost of issuance |  | 9,057 |
Payments of deferred offering costs | (71) |  |
Net cash generated from/ (used in) financing activities | (2,223) | (38,582) | 1,041,802
Effect of exchange rate changes on cash and cash equivalents, restricted cash | (1,148) | (7,954) | 2,879
Net increase/ (decrease) in cash and cash equivalents, restricted cash | 365,527 | (831,415) | 805,621
Cash and cash equivalents, restricted cash at the beginning of year | 133,161 | 964,576 | 158,955
Cash and cash equivalents, restricted cash at the end of year | 498,688 | 133,161 | 964,576
Supplemental cash flow disclosures |  |  |
Cash paid for income tax | (2,819) | (843) | (616)
Supplemental schedule of non-cash investing activities |  |  |
Conversion from bridge loan into investment |  |  | 2,302
Cash and cash equivalents | 498,688 | 133,161 | 963,938
Restricted cash |  |  | 638
Total cash, cash equivalents and restricted cash shown in the statement of cash flows | $ 498,688 | $ 133,161 | $ 964,576

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