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v3.22.1

Subsequent events (Details) ¥ in Millions, $ in Millions |  |  | 1 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | ---
Mar. 08, 2022 USD ($) | Mar. 08, 2022 CNY (¥) | Mar. 08, 2022 USD ($) | Mar. 08, 2022 CNY (¥) | Feb. 09, 2022 USD ($) | Feb. 09, 2022 CNY (¥) | Jan. 17, 2022 USD ($) | Jan. 17, 2022 CNY (¥) | Mar. 08, 2022 CNY (¥) | Feb. 09, 2022 CNY (¥) | Jan. 17, 2022 CNY (¥)
Subsequent events (Details) [Line Items] |  |  |  |  |  |  |  |  |  |  |
Maximum amount | $ 1.6 | ¥ 10 |  |  |  |  |  |  |  |  |
Bearing interest percentage | 5.50% |  | 5.50% |  |  |  |  |  | 5.50% |  |
short-term loans percentage | 100.00% |  | 100.00% |  |  |  |  |  | 100.00% |  |
Borrowed amount | $ 1.6 |  | $ 1.6 |  |  |  |  |  | ¥ 10 |  |
Subsequent Event [Member] |  |  |  |  |  |  |  |  |  |  |
Subsequent events (Details) [Line Items] |  |  |  |  |  |  |  |  |  |  |
Maximum amount |  |  | $ 1.6 | ¥ 10 | $ 1.6 | ¥ 10 | $ 1.6 | ¥ 10 |  |  |
Bearing interest percentage | 5.50% |  | 5.50% |  | 124.00% |  | 105.00% |  | 5.50% | 124.00% | 105.00%
short-term loans percentage | 100.00% |  | 100.00% |  | 4.94% |  | 3.85% |  | 100.00% | 4.94% | 3.85%
Borrowed amount | $ 1.6 |  | $ 1.6 |  | $ 1.6 |  | $ 1.6 |  | ¥ 10 | ¥ 10 | ¥ 10

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- Definition Amount of eligible retained income multiplied by applicable maximum payout ratio as defined by regulatory framework. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1 -Subparagraph (c)(1) -URI https://asc.fasb.org/extlink&oid=117337116&loc=SL5958568-112826 + Details
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- Definition Amount of allowance for credit loss on security borrowed. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -Subparagraph (f) -URI https://asc.fasb.org/extlink&oid=124255953&loc=SL82919249-210447 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=124255953&loc=SL82919249-210447 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 45 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=124255206&loc=SL82895884-210446 + Details
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