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Risks and Concentration (Details) - Customer concentration risk	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Accounts receivable - third parties, net | Geely Group, Related Party
Risks and Concentration
Concentration risk percentage	86.30%	95.80%
Accounts receivable - third parties, net | Customer A, a third party
Risks and Concentration
Concentration risk percentage	48.90%	51.10%
Accounts receivable - third parties, net | Customer B, a third party
Risks and Concentration
Concentration risk percentage	30.40%	11.00%
Accounts receivable - third parties, net | Customer C, a third party
Risks and Concentration
Concentration risk percentage	10.00%	10.60%
Accounts payable | Supplier C, a related party
Risks and Concentration
Concentration risk percentage	10.00%	10.30%
Accounts payable | Supplier A, a third party
Risks and Concentration
Concentration risk percentage	10.00%	15.50%
Accounts payable | Supplier B, a third party
Risks and Concentration
Concentration risk percentage	25.30%	13.80%
Accounts payable | Supplier D, a third party
Risks and Concentration
Concentration risk percentage	14.60%	10.00%
Liabilities, Total | Supplier C, a related party
Risks and Concentration
Concentration risk percentage	10.60%	10.00%	10.00%
Liabilities, Total | Supplier A, a third party
Risks and Concentration
Concentration risk percentage	11.80%	23.60%	35.20%
Liabilities, Total | Supplier B, a third party
Risks and Concentration
Concentration risk percentage	21.00%	10.00%	10.00%
Total revenues | Geely Group, Related Party
Risks and Concentration
Concentration risk percentage	67.00%	70.40%	74.10%
Total revenues | Customer A, a third party
Risks and Concentration
Concentration risk percentage	12.60%	10.00%	10.00%
Total revenues | Customer B, a third party
Risks and Concentration
Concentration risk percentage	12.50%	10.00%	10.00%

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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

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

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