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v3.20.2

Cash and cash equivalents (Tables) | 6 Months Ended
--- | ---
Jun. 30, 2020
Cash and cash equivalents |
Summary of cash and cash equivalents | ​
​ | ​ | ​ | ​ | ​
​ | ​ | As of
​ |  | December 31, |  | June 30,
​ | ​ | 2019 | ​ | 2020
​ |  | $ |  | $
Cash at bank and in hand | ​ | 75,111 | ​ | 257,775
Cash equivalents | ​ | 821 | ​ | 829
​ | ​ | 75,932 | ​ | 258,604
Denominated in: | ​ |  | ​ |
US$ | ​ | 62,478 | ​ | 225,709
RMB (note (i)) | ​ | 6,761 | ​ | 23,375
Hong Kong dollar ("HK$") | ​ | 5,948 | ​ | 9,151
Australia dollar ("A$") | ​ | 745 | ​ | 369
​ | ​ | 75,932 | ​ | 258,604
Note:
(i) | Certain cash and bank balances denominated in RMB were deposited with banks in the PRC. The conversion of these RMB denominated balances into foreign currencies is subject to the rules and regulations of foreign exchange control promulgated by the PRC government.

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