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Land Use Rights (Tables) | 12 Months Ended
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Dec. 31, 2020
Land use rights |
Land Use Rights |
Summary of land use rights | ​
​ | ​ | ​ | ​ | ​
​ |  | December 31, |  | December 31,
​ | ​ | 2019 | ​ | 2020
​ | ​ | RMB | ​ | RMB
Cost |  | 3,846,660 |  | 4,402,470
Incentive payment from local government |  | (15,000) |  | (15,000)
Accumulated amortization |  | (124,481) |  | (209,213)
Land use right, net |  | 3,707,179 |  | 4,178,257

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