Annual and transition report of foreign private issuers pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies (Tables)

Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2020

Depreciation is recognized over the following useful lives in straight-line method, taking into consideration the assets’ estimated salvage value:

Building		30 years
Computer equipment		3 to 5 years
Furniture, fixtures and office equipment		3 to 5 years
Software		3 to 10 years
Motor vehicles		5 years
Leasehold improvements		The shorter of lease terms and estimated useful lives

Employee Benefit Plans

Employee benefit expenses recognized under these plans for the years ended December 31, 2018 , 2019 and 2020 are allocated to the following expense items:

	Year Ended December 31,
	2018		2019		2020
	RMB		RMB		RMB
Cost of revenues		79,280		2,363,553	3,022,423
Research and development		3,232,457		2,468,898	962,709
Sales and marketing		771,479		2,077,128	1,881,648
General and administrative		1,530,096		3,301,256	2,576,853
Total expense due to employee benefit plans		5,613,312		10,210,835	8,443,633