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v3.20.1

Related Party Transactions - Unsecured short-term loan and bad debt provision to receivables (Details) ¥ in Thousands, $ in Thousands | 1 Months Ended | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
Nov. 30, 2017 USD ($) | Jan. 31, 2017 CNY (¥) | Dec. 31, 2018 CNY (¥) | Dec. 31, 2017 CNY (¥) | Dec. 31, 2016 USD ($) | Dec. 31, 2019 CNY (¥) | Dec. 31, 2019 USD ($) | Dec. 31, 2018 USD ($) | Dec. 31, 2016 CNY (¥)
Related Party Transaction |  |  |  |  |  |  |  |  |
Bad debt provision to receivables |  |  | ¥ 78,684 | ¥ 65,454 |  | ¥ 118,886 | $ 17,077 | $ 11,302 | ¥ 91,348
Particle |  |  |  |  |  |  |  |  |
Related Party Transaction |  |  |  |  |  |  |  |  |
Principal amount of short-term unsecured loans granted | $ |  |  |  |  | $ 14,800 |  |  |  |
Loans repaid by related party |  |  | 84,083 | 48,747 |  |  |  |  |
Interest rate of short-term unsecured loans |  |  |  |  | 4.35% |  |  |  |
Maturity of short-term unsecured loans |  |  |  |  | 24 months |  |  |  |
Total interest income arising from loans provided to Particle, convertible loans due from Particle and bank interest expenses incurred by the Company but borne by Particle |  |  | ¥ 9,900 | ¥ 23,100 |  |  |  |  |
Bad debt provision to receivables |  |  |  |  |  | ¥ 11,200 | $ 1,600 |  |
Particle | Loan Granted to Related Party in November 2016 |  |  |  |  |  |  |  |  |
Related Party Transaction |  |  |  |  |  |  |  |  |
Loans repaid by related party | $ | $ 6,800 |  |  |  |  |  |  |  |
Particle | Loan Granted to Related Party in January 2017 |  |  |  |  |  |  |  |  |
Related Party Transaction |  |  |  |  |  |  |  |  |
Principal amount of short-term unsecured loans granted |  | ¥ 74,000 |  |  |  |  |  |  |
Interest rate of short-term unsecured loans |  | 9.00% |  |  |  |  |  |  |
Maturity of short-term unsecured loans |  | 12 months |  |  |  |  |  |  |

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