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CONSOLIDATED STATEMENTS OF CASH FLOWS - CNY (¥) ¥ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Cash flows from operating activities: |  |  |
Net loss | ¥ (304,900) | ¥ (731,121) | ¥ (1,094,112)
Adjustments to reconcile net loss to net cash provided by operating activities: |  |  |
Depreciation and amortization | 73,466 | 76,073 | 53,025
Share-based compensation expense | 17,393 | 31,899 | 183,349
Loss on disposals of property and equipment | 3,011 | 175 | 432
Allowance for credit losses | 12,756 | 28,006 | 31,476
Write-down of inventories | 39,969 | 21,139 | 14,310
Investment income | (6,100) | (124) | (6,232)
Interest expenses of convertible notes |  | 73,081 |
Foreign exchange losses/(gains) | 11,061 | (13,733) | 8,205
Changes in operating assets and liabilities: |  |  |
Accounts receivable | (585,486) | (333,067) | (1,127,262)
Notes receivable | (42,289) | 85,753 | (103,280)
Inventories | (52,956) | 85,802 | (329,237)
Prepayments and other current assets | 51,982 | 21,551 | (58,662)
Accounts and notes payable | 317,234 | 119,814 | 922,880
Advance from customers | (11,224) | 1,019 | 11,330
Operating lease right-of use assets | 73,007 | 81,378 | (71,440)
Land use right | (328) | 10,930 |
Accrued expenses and other liabilities | (92,542) | 29,342 | 116,736
Operating lease liabilities | (72,002) | (92,120) | 65,730
Net cash used in operating activities | (567,948) | (504,203) | (1,382,752)
Cash flows from investing activities: |  |  |
Purchase of short-term investments | (1,288,080) | (100,000) | (1,480,018)
Maturity of short-term investments | 430,623 | 100,124 | 1,548,882
Purchase of property and equipment | (50,496) | (37,047) | (145,200)
Purchase of intangible assets | (5,067) | (13,057) | (12,867)
Proceeds from sale of property and equipment and intangible assets | 4,718 | 12,940 | 5,047
Cash paid for a business combination in previous years, net of cash acquired |  |  | (10,239)
Net cash used in investing activities | (908,302) | (37,040) | (94,395)
Cash flows from financing activities: |  |  |
Proceeds from issuance of convertible note |  | 1,384,218 |
Proceeds from short-term borrowings | 1,114,000 | 764,160 | 404,170
Repayment of short-term borrowings | (779,000) | (807,592) | (215,842)
Acquisition of the redeemable non-controlling interest | (5,044) | (22,396) | (13,697)
Proceeds from public offering, net of issuance costs | 385,768 |  |
Other financing activities |  | (15,680) |
Net cash provided by financing activities | 715,724 | 1,302,710 | 174,631
Effect of exchange rate changes on cash, cash equivalents, and restricted cash | 5,042 | 117,469 | (8,695)
(Decrease)/Increase in cash, cash equivalents, and restricted cash | (755,484) | 878,936 | (1,311,211)
Cash, cash equivalents, and restricted cash at beginning of year | 2,005,856 | 1,126,920 | 2,438,131
Cash, cash equivalents, and restricted cash at end of year | 1,250,372 | 2,005,856 | 1,126,920
Supplemental cash flow information: |  |  |
Cash payments for interest | (19,343) | (20,957) | (10,291)
Cash payments for income taxes | (154) | (1,220) | (1,224)
Supplemental information for non-cash financing activities: |  |  |
Accretion on convertible redeemable preferred shares to redemption value | (660,070) | (509,281) | ¥ (329,737)
Issuance of Series F preferred shares from conversion of the convertible notes |  | ¥ (1,631,564) |
Conversion of preferred shares to ordinary shares | ¥ (7,570,417) |  |

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