Accounts Receivable, Net - Balance of notes receivable (Details) - CNY (¥) ¥ in Thousands	Dec. 31, 2025	Dec. 31, 2024
Accounts Receivable, after Allowance for Credit Loss [Abstract]
Notes receivable, gross	¥ 18,837	¥ 30,048
Allowance for expected credit losses	(17)	(31)
Notes receivable, net	¥ 18,820	¥ 30,017

Amount of allowance for credit loss on financing receivable. Excludes allowance for financing receivable covered under loss sharing agreement.

Amortized cost, before allowance for credit loss, of financing receivable. Excludes financing receivable covered under loss sharing agreement and net investment in lease.

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