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CONSOLIDATED STATEMENTS OF CASH FLOWS ¥ in Thousands, $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2019 CNY (¥) | Dec. 31, 2019 USD ($) | Dec. 31, 2018 CNY (¥) | Dec. 31, 2017 CNY (¥)
Cash flows from operating activities: |  |  |  |
Net profit | ¥ 2,374,518 | $ 341,078 | ¥ 2,469,451 | ¥ 1,082,907
Adjustments to reconcile net profit to net cash provided by (used in) operating activities: |  |  |  |
Provision for loans receivable | 299,504 | 43,021 | 192,749 | 46,586
Provision for accounts receivable | 261,882 | 37,617 | 106,652 |
Depreciation and amortization | 57,712 | 8,290 | 42,162 | 22,555
Amortization of right-of-use asset and interest of leasing liabilities | 49,373 | 7,092 |  |
Change in fair value of short term investments | 13,028 | 1,871 | (16,460) | (3,875)
Gain from disposal of investments | (10,614) | (1,525) |  |
Change in fair value of investments |  |  | 77 |
Net gain from investment in loans | (1,106,669) | (158,963) | (256,108) | (31,377)
Share-based compensation | 42,260 | 6,070 | 50,319 | 106,152
Impairment of intangible assets | 4,600 | 661 |  |
Changes in operating assets and liabilities: |  |  |  |
Accounts receivable | (332,145) | (47,710) | (746,753) | (3,578)
Quality assurance receivable | (1,585,276) | (227,711) | (911,597) | (865,957)
Financial guarantee derivative assets and discretionary payment | 56,287 | 8,085 | (379,717) | 490,721
Deferred tax assets | (6,977) | (1,002) | (27,705) | (112,583)
Amounts due from related party | 2,830 | 407 | (2,830) | (123)
Contract assets | 91,548 | 13,150 | (59,019) |
Prepaid expenses and other assets | (1,090,910) | (156,699) | (115,017) | (70,703)
Deferred revenue |  |  |  | 102,198
Payable to platform customers | (220,404) | (31,659) | (208,932) | 692,307
Quality assurance payable | 956,774 | 137,432 | 1,756,535 | 1,589,140
Payroll and welfare payable | (11,569) | (1,662) | 31,423 | 72,297
Taxes payable | (96,803) | (13,905) | (32,042) | 171,934
Contract liabilities | (109,741) | (15,763) | (97,080) |
Amounts due to related party | 4,309 | 619 | (11,972) | (3,539)
Leasing liabilities | (51,370) | (7,379) |  |
Deferred tax liabilities | 98,858 | 14,200 | 84,124 | 15,940
Accrued expenses and other liabilities | 93,473 | 13,427 | 16,696 | 108,449
Net cash provided by operating activities | (215,522) | (30,958) | 1,884,956 | 3,409,451
Cash flows from investing activities: |  |  |  |
Collection of loans originated and held by the Group | 10,520,227 | 1,511,136 | 2,805,940 | 368,953
Investment in loans originated and held by the Group | (12,128,140) | (1,742,098) | (4,331,811) | (1,022,937)
Investment in convertible loan | (20,000) | (2,873) |  |
Proceeds from disposal of investments | 21,508 | 3,089 |  |
Purchase of investments | (803,691) | (115,443) | (155,286) | (9,953)
Proceeds from short-term investments | 5,532,569 | 794,704 | 13,122,058 | 6,485,536
Purchase of short-term investments | (3,902,033) | (560,492) | (12,799,210) | (8,147,450)
Purchase of property, equipment and software | (48,659) | (6,989) | (83,584) | (90,871)
Proceeds from disposal of a subsidiary |  |  |  | 6,000
Acquisition of intangible assets |  |  | (5,120) |
Cash paid for business combinations, net of cash acquired |  |  |  | (40,078)
Net cash used in investing activities | (828,219) | (118,966) | (1,447,013) | (2,450,800)
Cash flows from financing activities: |  |  |  |
Cash paid for repurchase of preferential beneficiaries of consolidated trusts | (7,948) | (1,143) | (47,173) | (31,250)
Cash received from short-term borrowings | 235,000 | 33,757 | 87,010 |
Repayment of short-term borrowings | (25,000) | (3,591) | (63,685) |
Cash paid for dividends | (390,715) | (56,123) |  |
Repurchase of ordinary shares | (42,276) | (6,073) | (452,262) |
Proceeds from exercise of share-based compensation plans | 31,592 | 4,538 | 14,009 |
Capital injection from non-controlling interest |  |  | 1,458 |
Proceeds from issuance of ordinary shares, net |  |  |  | 1,677,222
Net cash provided by financing activities | 1,749,512 | 251,301 | 530,097 | 2,132,933
Effect of exchange rate changes on cash, cash equivalents and restricted cash | 11,253 | 1,618 | 41,977 | (15,445)
Net increase in cash, cash equivalents and restricted cash | 717,024 | 102,995 | 1,010,017 | 3,076,139
Cash, cash equivalents and restricted cash at beginning of year | 5,293,721 | 760,395 | 4,283,704 | 1,207,565
Cash, cash equivalents and restricted cash at end of year | 6,010,745 | 863,390 | 5,293,721 | 4,283,704
Supplemental disclosure of cash investing and financing activities |  |  |  |
Cash paid for interest including paid to investors of consolidated trusts | (94,957) | (13,640) | (58,312) | (5,376)
Cash paid for income taxes | (145,825) | (20,946) | (180,233) | (216,060)
Supplemental disclosure of non-cash investing and financing activities |  |  |  |
Accretion on convertible redeemable preferred shares to redemption value |  |  |  | 3,073,471
Payable for purchase of property, equipment and software | 292 | 42 | 917 | 6,585
Payable for repurchase of ordinary shares | 4,897 | 703 |  |
Receivable from exercise of share-based incentive plans | 3,150 | 452 | 788 |
Consolidated Trust [Member] |  |  |  |
Cash flows from financing activities: |  |  |  |
Cash received from investors | 3,437,160 | 493,717 | 1,183,580 | 555,500
Cash paid to investors | ¥ (1,488,301) | $ (213,781) | ¥ (192,840) | ¥ (68,539)

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