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LONG-TERM INVESTMENTS IN FINANCIAL INSTRUMENTS (Tables) | 12 Months Ended
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Dec. 31, 2021
LONG-TERM INVESTMENTS IN FINANCIAL INSTRUMENTS |
Schedule of other non-current financial assets | ​
​ | ​ | ​ | ​ | ​
​ |  | 2020 |  | 2021
Investment in equity at fair value through profit or loss |  | 1,686 |  | 12,962
Convertible bonds at fair value through profit or loss |  | 2,339 |  | 681
Investment in equity at fair value through other comprehensive income |  | 20 |  | 18
​ | ​ | ​ | ​ | ​
Total investment in financial instruments |  | 4,045 |  | 13,661

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