Accrued Expenses and Other Liabilities - Schedule of Accrued Expenses and Other Liabilities (Details) ¥ in Thousands, $ in Thousands	Dec. 31, 2021 CNY (¥)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 CNY (¥)
Payables And Accruals [Abstract]
Accrued payroll and welfare	¥ 95,816		¥ 83,190
Freight payable	68,197		70,656
Deposit from suppliers	27,483		30,755
Installation fee payables	18,957		25,714
Product warranty	28,796		22,420
Marketing and promotion expenses	25,709		18,476
Payment for purchase of property	17,647		15,624
Other tax payable	9,954		15,354
Professional fee payables	5,143		9,188
Refund liabilities	6,320		7,707
Other current liabilities	69,254		39,804
Total	373,276		338,888
Less: non-current portion	(7,558)		(3,400)
Accrued expenses and other liabilities-current portion	¥ 365,718	$ 57,390	¥ 335,488

Amount of expenses incurred but not yet paid nor invoiced, and liabilities classified as other.

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Carrying value as of the balance sheet date of obligations incurred through that date and payable for the marketing, trade and selling of the entity's goods and services. Marketing costs would include expenditures for planning and executing the conception, pricing, promotion, and distribution of ideas, goods, and services; costs of public relations and corporate promotions; and obligations incurred and payable for sales discounts, rebates, price protection programs, etc. offered to customers and under government programs. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Carrying value as of the balance sheet date of obligations incurred through that date and payable for professional fees, such as for legal and accounting services received. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Amount of liability for consideration received or receivable from customer which is not included in transaction price, when consideration is expected to be refunded to customer, classified as current.

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Total of the carrying values as of the balance sheet date of obligations incurred through that date and payable for obligations related to services received from employees, such as accrued salaries and bonuses, payroll taxes and fringe benefits. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Amount of expenses incurred but not yet paid classified as other, due within one year or the normal operating cycle, if longer.

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Carrying value as of the balance sheet date of obligations incurred through that date and payable for estimated claims under standard and extended warranty protection rights granted to customers. For classified balance sheets, represents the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Carrying value as of the balance sheet date of obligations incurred and payable for statutory income, sales, use, payroll, excise, real, property and other taxes. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Accrued expenses and other liabilities non-current.

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Amount of expenses incurred but not yet paid nor invoiced, and liabilities classified as other.

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Deposits from suppliers current.

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Freight payable current.

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Installation fee payables.

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Payments for purchase of property current.

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