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Principal Accounting Policies (Tables) | 12 Months Ended
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Dec. 31, 2021
Principal Accounting Policies |
Schedule of restricted cash balance | As of December 31, 2020 and 2021, the Group had a restricted cash balance approximately RMB3,051.4 million and RMB2,878.0 million, respectively, comprising as follows (in millions): ​
​ | ​ | ​ | ​ | ​
​ |  | December 31, |  | December 31,
​ | ​ | 2020 | ​ | 2021
​ | ​ | RMB | ​ | RMB
Customer deposit of NetEase Pay accounts |  | 1,722.0 |  | 2,091.3
Pledge deposits for short-term bank borrowings |  | 1,295.0 |  | —
Deposit required by the PRC government authorities related to Youdao’s educational services | ​ | — | ​ | 749.8
Others | ​ | 34.4 | ​ | 36.9
Total | ​ | 3,051.4 | ​ | 2,878.0
​
Schedule of movements of the allowance for doubtful accounts/expected credit losses | The following table sets out the movements of the allowance for doubtful accounts/expected credit losses for the years ended December 31, 2019, 2020 and 2021 (in thousands):
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | For the year ended December 31,
​ |  | 2019 |  | 2020 |  | 2021
​ | ​ | RMB | ​ | RMB | ​ | RMB
Balance at the beginning of year |  | 130,648 |  | 77,147 |  | 113,253
Provisions |  | (30,946) |  | 40,600 |  | 265,930
Write-offs |  | (22,555) |  | (4,494) |  | (9,201)
Balance at the end of year | ​ | 77,147 | ​ | 113,253 | ​ | 369,982
Schedule of property, equipment and software useful lives | ​
​ | ​ | ​
Building |  | 20 years
Decoration |  | 5 years
Leasehold improvements |  | lesser of the term of the lease and the estimated useful lives of the assets
Furniture, fixtures, office and other equipments |  | 3-10 years
Vehicles |  | 5 years
Servers and computers |  | 3 years
Software |  | 3 years
Schedule of intangible assets and its estimated useful life | ​
​ | ​ | ​
License right |  | over the license period
Technology | ​ | 7-10 years
Trademark |  | 10 years
​

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