v3.25.1
Summary of Significant Accounting Policies - Product warranties (Details) - CNY (¥)
¥ in Thousands
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Product warranties      
Balance at beginning of the year ¥ 419,311 ¥ 178,075 ¥ 15,715
Provision for warranty 501,933 415,244 214,793
Consumption (197,297) (174,008) (52,433)
Balance at end of the year ¥ 723,947 ¥ 419,311 ¥ 178,075