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v3.23.1

Share based compensation - Fair value of RSUs granted estimated Using binomial model (Details) - RSU | 12 Months Ended |  |  |
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Dec. 31, 2022 $ / shares | Dec. 31, 2021 $ / shares | Dec. 31, 2020 $ / shares | Dec. 31, 2022 ¥ / shares | Dec. 31, 2021 ¥ / shares | Dec. 31, 2020 ¥ / shares
Share based compensation |  |  |  |  |  |
Risk-free rate of return, minimum | 1.61% | 0.35% | 0.17% |  |  |
Risk-free rate of return, maximum | 4.12% | 2.70% | 2.91% |  |  |
Volatility, minimum | 44.15% | 41.13% | 44.68% |  |  |
Volatility, maximum | 48.12% | 50.60% | 54.39% |  |  |
Expected dividend yield | 0.00% | 0.00% | 0.00% |  |  |
Expected terms | 10 years | 10 years | 10 years |  |  |
Minimum |  |  |  |  |  |
Share based compensation |  |  |  |  |  |
Issuance price | (per share) | $ 7.57 | $ 4.26 | $ 3.16 | ¥ 48.29 | ¥ 27.97 | ¥ 21.76
Maximum |  |  |  |  |  |
Share based compensation |  |  |  |  |  |
Issuance price | (per share) | $ 9.05 | $ 7.45 | $ 4.03 | ¥ 64.98 | ¥ 47.51 | ¥ 26.27

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- Definition The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2)(iii) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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- Definition The estimated measure of the maximum percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period. + References No definition available. + Details
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- Definition The estimated measure of the minimum percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period. + References No definition available. + Details
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- Definition The maximum risk-free interest rate assumption that is used in valuing an option on its own shares. + References No definition available. + Details
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- Definition The minimum risk-free interest rate assumption that is used in valuing an option on its own shares. + References No definition available. + Details
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- Definition 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. + References No definition available. + Details
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- Definition Price of a single share of a number of saleable stocks of a company. + References No definition available. + Details
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- Definition Expected term of award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2)(i) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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