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Short-term Borrowings	12 Months Ended
	Dec. 31, 2019
Short-term Borrowings
Short-term Borrowings	11.  Short-term Borrowings ​ As of December 31, 2019, the Group obtained short-term borrowings from banks of RMB897,022 in aggregate collateralized by bank wealth management products of RMB923,800, which were classified as short-term investments as provided by one of the Group's wholly-owned subsidiaries. The annual interest rates of these borrowings are approximately 2.70% to 3.00%. For the year ended December 31,2019,the Group recognized interest expense of RMB1,726 (US$248) in the consolidated statements of comprehensive loss. ​

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- Definition

The entire disclosure for short-term debt.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-URI http://asc.fasb.org/topic&trid=2208564

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