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CONSOLIDATED STATEMENTS OF OPERATIONS (Parenthetical) - CNY (¥) ¥ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Allocated Share-based Compensation Expense | ¥ 7,181 | ¥ 768 | ¥ 29,748
Cost of Revenues |  |  |
Allocated Share-based Compensation Expense | 33 | 101 | 146
Selling and Marketing Expense |  |  |
Allocated Share-based Compensation Expense | 4,166 | 14 | 14,278
General and Administrative Expense |  |  |
Allocated Share-based Compensation Expense | ¥ 2,982 | ¥ 681 | ¥ 15,324

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