REVENUE AND DEFERRED REVENUE (Details) ¥ in Thousands, $ in Thousands	12 Months Ended
Dec. 31, 2025 CNY (¥)	Dec. 31, 2025 USD ($)	Dec. 31, 2024 CNY (¥)	Dec. 31, 2023 CNY (¥)	Jan. 01, 2025 CNY (¥)
REVENUE AND DEFERRED REVENUE
Revenues	¥ 807,019	$ 115,402	¥ 922,201	¥ 1,018,139
Amortization of deferred channel costs	139,740	19,983	161,624	192,122
Impairment recognized to the deferred channel costs	0		0	0
Deferred revenue					¥ 283,251
Revenue recognized from deferred revenue	275,158	39,347
Recognized over time
REVENUE AND DEFERRED REVENUE
Revenues	701,505	100,314	818,711	926,479
Recognized at a point in time
REVENUE AND DEFERRED REVENUE
Revenues	¥ 105,514	$ 15,088	¥ 103,490	¥ 91,660

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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