For each line item in the statement of financial position, the amounts of gains and losses from fair value changes included in earnings.

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Fair value as of the balance sheet date of all foreign currency derivatives designated as cash flow hedging instruments.

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Amount of investment in marketable security.

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Short-term Investments (Details) ¥ in Thousands	12 Months Ended
Short-term Investments (Details) ¥ in Thousands	Dec. 31, 2025 CNY (¥)	Dec. 31, 2025 USD ($)	Dec. 31, 2024 CNY (¥)	Dec. 31, 2025 USD ($)	Dec. 31, 2023 CNY (¥)
Short-Term Investments [Line Items]
Fair value changes in loss	¥ 49	$ 7,000	¥ 4
Foreign currency derivative instrument	68		95	$ 10
Zhengbang [Member]
Short-Term Investments [Line Items]
Marketable securities	¥ 146		¥ 110	$ 20,000