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PROPERTY AND EQUIPMENT, NET | 12 Months Ended
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Dec. 31, 2023
PROPERTY AND EQUIPMENT, NET |
PROPERTY AND EQUIPMENT, NET | 5.PROPERTY AND EQUIPMENT, NET Property and equipment, net consist of the following: ​
​ | ​ | ​ | ​ | ​
​ | ​ | As of December 31,
​ |  | 2022 |  | 2023
Cost: | ​ |  | ​ |
Buildings |  | 843 |  | 791
Leasehold improvements |  | 10,952 |  | 11,053
Furniture, fixtures and equipment |  | 2,520 |  | 2,448
Motor vehicles |  | 3 |  | 2
​ |  | 14,318 |  | 14,294
Less: Accumulated depreciation |  | 7,727 |  | 8,456
​ |  | 6,591 |  | 5,838
Construction in progress |  | 193 |  | 259
Property and equipment, net |  | 6,784 |  | 6,097
​ Depreciation expense was RMB1,352, RMB1,312 and RMB1,276 for the years ended December 31, 2021, 2022 and 2023, respectively.

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- Definition The entire disclosure for long-lived, physical asset used in normal conduct of business and not intended for resale. Includes, but is not limited to, work of art, historical treasure, and similar asset classified as collections. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 360 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org//360/tableOfContent Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Section 50 -Paragraph 6 -SubTopic 360 -Topic 958 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480321/958-360-50-6 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d) -SubTopic 360 -Topic 958 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480321/958-360-50-1 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Section 50 -Paragraph 7 -SubTopic 360 -Topic 958 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480321/958-360-50-7 + Details
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