Concentration and Risks - Schedule of Concentration Risk of Accounts Receivable from Related Party (Details) ¥ in Thousands, $ in Thousands	12 Months Ended
Dec. 31, 2021 CNY (¥)	Dec. 31, 2020 CNY (¥)	Dec. 31, 2021 USD ($)
Concentration Risk [Line Items]
Accounts receivable from a related party	¥ 320,939	¥ 609,094	$ 50,362
Xiaomi Inc \| Accounts Receivable \| Credit Risk
Concentration Risk [Line Items]
Accounts receivable from a related party	¥ 320,939	¥ 609,094
Concentration risk, percentage	100.00%	100.00%

The aggregate amount of receivables to be collected from related parties where one party can exercise control or significant influence over another party; including affiliates, owners or officers and their immediate families, pension trusts, and so forth, at the financial statement date. which are usually due within one year (or one business cycle).

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+ Details