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PARENT COMPANY ONLY CONDENSED FINANCIAL INFORMATION (Tables) | 12 Months Ended
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Dec. 31, 2020
PARENT COMPANY ONLY CONDENSED FINANCIAL INFORMATION |
Condensed balance sheets | Condensed balance sheets ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | As at December 31
​ | ​ | 2019 | ​ | 2020 | ​ | 2020
​ |  | RMB |  | RMB |  | US$
ASSETS |  |  |  |  |  |
Current assets: |  |  |  |  |  |
Cash and cash equivalent |  | 540 |  | 2,079 | ​ | 319
Amounts due from subsidiaries |  | 404,213 |  | 375,162 | ​ | 57,496
Total current assets |  | 404,753 |  | 377,241 | ​ | 57,815
Non-current assets: |  | ​ |  | ​ | ​ | ​
Investments in subsidiaries |  | 1,154,986 |  | 567,330 | ​ | 86,946
Prepayment for long-term investment |  | — |  | 5,230 | ​ | 801
Total assets |  | 1,559,739 |  | 949,801 | ​ | 145,562
​ | ​ | ​ | ​ | ​ | ​ | ​
LIABILITIES AND SHAREHOLDERS’ EQUITY |  | ​ |  | ​ | ​ | ​
Current liabilities: |  | ​ |  | ​ | ​ | ​
Accrued expenses and other liabilities |  | 55,409 |  | 35,476 | ​ | 5,437
Amounts due to subsidiaries |  | 1,627,094 |  | 1,577,280 | ​ | 241,729
Total current liabilities |  | 1,682,503 |  | 1,612,756 | ​ | 247,166
​ | ​ | ​ | ​ | ​ | ​ | ​
Total liabilities |  | 1,682,503 |  | 1,612,756 | ​ | 247,166
​ | ​ | ​ | ​ | ​ | ​ | ​
Shareholders’ equity (deficit): |  | ​ |  | ​ | ​ | ​
Class A ordinary shares (par value of US$0.0001per share; authorized shares-500,000,000; issued shares-142,353,532 as of December 31, 2019 and 2020; outstanding shares-84,454,047 and 84,463,737 as of December 31, 2019 and 2020, respectively) |  | 68 |  | 68 | ​ | 10
Class B ordinary shares (par value of US$0.0001per share; authorized shares‑45,787,948; issued shares-45,787,948 and 45,787,948 as of December 31, 2018 and 2019; outstanding shares- 45,787,948 and 45,787,948 as of December 31, 2019 and 2020, respectively) |  | 37 |  | 37 | ​ | 6
Treasury stock (12,111,537 and 12,101,847 shares as of December 31, 2019 and 2020, respectively) |  | (8) |  | (8) | ​ | (1)
Additional paid-in capital |  | 1,759,941 |  | 1,840,026 | ​ | 281,996
Accumulated other comprehensive loss |  | (97,285) |  | (46,429) | ​ | (7,116)
Accumulated deficit |  | (1,785,517) |  | (2,456,649) | ​ | (376,498)
Total shareholders’ equity (deficit) |  | (122,764) |  | (662,955) | ​ | (101,603)
Total liabilities and shareholders’ equity (deficit) |  | 1,559,739 |  | 949,801 | ​ | 145,563
​
Condensed statements of comprehensive loss | Condensed statements of comprehensive loss ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | For the Years Ended December 31,
​ | ​ | 2018 | ​ | 2019 | ​ | 2020 | ​ | 2020
​ |  | RMB |  | RMB |  | RMB |  | US$
Revenues |  | — |  | — |  | — |  | —
Cost of revenues |  | — |  | — |  | — |  | —
General and administrative expenses |  | (17,051) |  | (39,118) |  | (23,598) | ​ | (3,617)
Selling expenses |  | (2,021) |  | (2,938) |  | (2,969) |  | (455)
Operating loss |  | (19,072) |  | (42,056) |  | (26,567) | ​ | (4,072)
Equity in loss of subsidiaries |  | (333,682) |  | (514,070) |  | (621,932) | ​ | (95,317)
Interest income |  | 14 |  | 1,977 |  | 588 |  | 90
Interest expense |  | (15,325) |  | (6,481) |  | (3,036) |  | (465)
Foreign exchange gain |  | 8,835 |  | 8,104 |  | (18,962) |  | (2,906)
Net loss |  | (359,230) |  | (552,526) |  | (669,909) | ​ | (102,670)
Other comprehensive income (loss), net of tax of nil foreign currency translation adjustments |  | (41,203) |  | (8,664) |  | 50,856 | ​ | 7,794
Total other comprehensive (loss) income |  | (41,203) |  | (8,664) |  | 50,856 | ​ | 7,794
Comprehensive loss |  | (400,433) |  | (561,190) |  | (619,053) | ​ | (94,876)
​
Condensed statements of cash flows | Condensed statements of cash flows ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | For the Years Ended December 31,
​ | ​ | 2018 | ​ | 2019 | ​ | 2020 | ​ | 2020
​ |  | RMB |  | RMB |  | RMB |  | US$
Net cash (used in ) generated from operating activities |  | (5,024) |  | (31,460) |  | 9,041 | ​ | 1,386
Net cash generated (used in) from investing activities |  | 294,551 |  | 311,716 |  | (7,468) | ​ | (1,145)
Net cash used in financing activities |  | (284,824) |  | (280,483) |  | — |  | —
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Exchange rate effect on cash |  | (7,085) |  | 45 |  | (34) |  | (5)
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Net (decrease) increase in cash |  | (2,382) |  | (182) |  | 1,539 |  | 236
Cash at beginning of the year |  | 3,104 |  | 722 |  | 540 |  | 83
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Cash at end of the year |  | 722 |  | 540 |  | 2,079 |  | 319
​

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