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CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS (Parenthetical) ¥ in Thousands, $ in Thousands | 12 Months Ended
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Dec. 31, 2019 USD ($) | Dec. 31, 2019 CNY (¥) | Dec. 31, 2018 CNY (¥) | Dec. 31, 2017 CNY (¥)
Interest expense to related party | $ 22 | ¥ 151 | ¥ 193 | ¥ 31,716
Services and other revenues |  |  |  |
Revenues, net of business tax, value-added tax and related surcharges, financing lease income from related party | $ 730 | ¥ 5,081 | ¥ 9,141 | ¥ 10,695

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