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Revenues and Deferred Revenue | 12 Months Ended
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Dec. 31, 2022
Disaggregation of Revenue [Abstract] |
Revenues and Deferred Revenue | 11. REVENUES AND DEFERRED REVENUE For the years ended December 31, 2020, 2021 and 2022, all of the Group’s revenues were generated in the PRC, and the disaggregated revenues by types were as follows:
|  | Years ended December 31, |
|  | 2020 |  |  | 2021 | 2022 |
|  | RMB |  |  | RMB |  |  | RMB |
Disaggregation of revenues |  |  |  |  |  |  |  |  |
Revenue by types: |  |  |  |  |  |  |  |  |
Gross revenues: |  |  |  |  |  |  |  |  |
Degree- or diploma-oriented post-secondary courses |  |  | 1,904,957 |  |  |  | 1,636,256 |  |  |  | 1,087,413 |
Professional certification preparation, professional skills and interest courses |  |  | 268,118 |  |  |  | 794,700 |  |  |  | 1,115,542 |
Subtotal Online educational courses |  |  | 2,173,075 |  |  |  | 2,430,956 |  |  |  | 2,202,955 |
Commissions |  |  | 19,985 |  |  |  | 50,465 |  |  |  | 46,271 |
Others |  |  | 11,286 |  |  |  | 28,979 |  |  |  | 79,592 |
Total revenues |  |  | 2,204,346 |  |  |  | 2,510,400 |  |  |  | 2,328,818 |
Less: VAT related surcharges |  |  | (555 | ) |  |  | (2,583 | ) |  |  | (5,717 | )
Total net revenues |  |  | 2,203,791 |  |  |  | 2,507,817 |  |  |  | 2,323,101 |
The movements of the deferred revenue for the years ended December 31, 2021 and 2022 were as follows (1):
|  | As of December 31, |
|  | 2021 |  |  | 2022 |
|  | RMB |  |  | RMB |
Beginning balance (current and non-current) |  |  | 3,024,443 |  |  |  | 2,348,179 |
Additions |  |  | 1,930,075 |  |  |  | 1,606,642 |
Deductions |  |  | (2,606,339 | ) |  |  | (2,263,875 | )
Ending balance (current and non-current) |  |  | 2,348,179 |  |  |  | 1,690,946 |
Deferred revenue, current |  |  | 1,266,948 |  |  |  | 986,086 |
Deferred revenue, non-current |  |  | 1,081,231 |  |  |  | 704,860 |
(1) Amounts presented are inclusive of VAT (see VAT in Note 2). Deferred revenue primarily consists of educational service fees received from customers for which the Group’s revenue recognition criteria have not been met. Deferred revenue balance will be recognized as revenue once the criteria for revenue recognition are met. The current portion of deferred revenue as of January 1, 2021 and January 1, 2022 were substantially all recognized as revenue during the years ended December 31, 2021 and 2022, respectively. The Group’s remaining performance obligations, representing the amount of the transaction price for which service has not been provided, is substantially included in the deferred revenue account on the consolidated financial statements and the related disclosures. As of December 31, 2022, the deferred revenue balance was RMB 1,690,946, of which RMB 986,086 and RMB 177,066 will be recognized as revenue over the next 12 and 24 months, respectively, with the remainder of RMB 527,794 recognized thereafter.

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