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CONSOLIDATED STATEMENTS OF CASH FLOWS ¥ in Thousands, $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 USD ($) | Dec. 31, 2020 CNY (¥) | Dec. 31, 2019 CNY (¥) | Dec. 31, 2018 CNY (¥)
Cash flows from operating activities: |  |  |  |
Net Loss | $ (25,056) | ¥ (163,478) | ¥ (251,299) | ¥ (78,700)
Adjustment to reconcile net loss to net cash used in operating activities: |  |  |  |
Provisions for asset impairment | 2,540 | 16,573 | 1,000 |
Depreciation of property, equipment and software | 273 | 1,785 | 3,483 | 1,060
Amortization of intangible assets | 634 | 4,134 | 0 | 0
Amortization of leasehold improvement | 182 | 1,190 | 287 |
Amortization of non-current assets |  |  | 656 |
Share- based compensation | 2,674 | 17,448 | 110,401 | 78,133
Allowance for doubtful accounts | 2,093 | 13,654 | 13,684 | 491
Investment loss from long-term investments | (143) | (933) | 917 | 660
Change in fair value of warrant | 0 | 0 | 0 | 3,843
Interests income/(expenses) - net | (190) | (1,241) | (252) | 2,083
Loss/ (Gain) on disposal of property and equipment | 8 | 51 | (5) | 1
Recognition of deferred income | (84) | (550) | (611) |
Exchange loss | (4) | (25) | 661 |
Loss on changes in fair value in guarantee liabilities | 36 | 233 |  |
Deferred income taxes | (158) | (1,032) |  |
Non-cash lease expense | 24 | 157 |  |
Changes in operating assets and liabilities: |  |  |  |
Accounts receivable | (1,133) | (7,390) | (30,524) | (44,279)
Prepayment and other current assets | 2,090 | 13,638 | (24,100) | (50,377)
Held-for-sale assets |  |  |  | 837
Accounts payable | 2,448 | 15,970 | (1,171) | 3,656
Advance from customers | 2,344 | 15,296 | (9,899) | 4,953
Salary and welfare benefits payable | (2,458) | (16,041) | 19,190 | 7,538
Deferred revenue | 264 | 1,720 |  |
Other taxes payable | 134 | 876 | (1,037) | (4,502)
Other current liabilities | (136) | (889) | 6,813 | 21,265
Net cash used in operating activities | (13,618) | (88,854) | (161,806) | (53,338)
Cash flows from investing activities: |  |  |  |
Purchase of property, equipment and software, and other non-current assets | (314) | (2,048) | (13,243) | (20,708)
Placement of time deposits | (21,611) | (141,016) | (69,762) |
Cash payment of bridge loan |  |  | (99,148) |
Cash paid for short-term investments | (1,089) | (7,105) |  |
Cash paid for long-term investments | (107) | (700) | (5,400) | (4,250)
Cash received from maturity of time deposits | 25,470 | 166,192 |  |
Cash received from disposal of long-term investments | 38 | 250 |  |
Cash received from acquisition of a subsidiary | 204 | 1,330 |  |
Cash received from disposal of property, equipment and software |  |  | 5 | 12
Cash received from disposal of short-term investments | 3,186 | 20,795 |  | 4,200
Net cash (used in)/generated from investing activities | 5,777 | 37,698 | (187,548) | (20,746)
Cash flows from financing activities: |  |  |  |
Cash payments for repurchase of restricted shares from employees |  |  | (26,228) |
Cash payments for repurchase of shares |  |  | (13,749) |
Cash received from short-term borrowings | 460 | 3,000 |  | 19,942
Cash repayments of short-term borrowings | (460) | (3,000) |  | (44,913)
Cash repayments of long-term borrowings |  |  |  | (2,932)
Cash repayments of borrowing from a third party |  |  |  | (19,486)
Cash received from loans provided by employees |  |  |  | 11,199
Cash repayments of loans provided by employees |  |  |  | (14,434)
Proceeds from issuance of Series D-1 convertible redeemable preferred shares |  |  |  | 151,118
Payment of issuance cost for Series D-1 convertible redeemable preferred shares |  |  |  | (307)
Proceeds from issuance of Series D-2 convertible redeemable preferred shares |  |  |  | 359,834
Payment of issuance cost for Series D-2 convertible redeemable preferred share |  |  |  | (1,267)
Proceeds of initial public offering, net of issuance costs |  |  |  | 103,372
Cash received from the depositary bank |  |  | 2,732 |
Cash paid from other financing activities | (10) | (63) |  |
Net cash generated from/(used in) financing activities | (10) | (63) | (37,245) | 562,126
Effect of exchange rate changes on cash, cash equivalents and restricted cash | (687) | (4,485) | 3,490 | 12,713
Net increase/(decrease) in cash, cash equivalents and restricted cash | (8,538) | (55,704) | (383,109) | 500,755
Cash, cash equivalents and restricted cash at beginning of the year | 29,954 | 195,449 | 578,558 | 77,803
Including: |  |  |  |
Cash and cash equivalents at the beginning of the year | 29,720 | 193,920 | 578,558 | 66,695
Restricted cash at the beginning of the year | 234 | 1,529 |  | 11,108
Cash, cash equivalents and restricted cash at end of the year | 21,416 | 139,745 | 195,449 | 578,558
Including: |  |  |  |
Cash and cash equivalents at the end of the year | 16,845 | 109,916 | 193,920 | 578,558
Restricted cash at the end of the year | 4,571 | 29,829 | ¥ 1,529 |
Supplemental disclosures of cash flow information: |  |  |  |
Cash paid for interest expense |  |  |  | (4,340)
Supplemental schedule of non-cash investing and financing activities: |  |  |  |
Accretions to pre-IPO preferred shares redemption value |  |  |  | 35,066
Imputed interest for borrowing from a third party |  |  |  | 450
Conversion and redesignation of pre-IPO preferred shares into Class A ordinary shares |  |  |  | ¥ 930,436
Bridge loan credited into cash portion of acquisition (Note 24) | 15,310 | 99,896 |  |
Equity consideration of the acquisition (Note 24) | $ 2,601 | ¥ 16,969 |  |

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