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v3.21.1

Concentration of Credit Risk (Details) | 1 Months Ended |
--- | --- | ---
May 01, 2015 USD ($) | May 01, 2015 CNY (¥) | Dec. 31, 2020 USD ($) | Dec. 31, 2020 CNY (¥)
Concentration of Credit Risk (Details) [Line Items] |  |  |  |
Federal deposit insurance corporation | $ | $ 76,630 |  |  |
Maximum coverage from FDIC | $ |  |  | $ 3,880,911 |
RMB [Member] |  |  |  |
Concentration of Credit Risk (Details) [Line Items] |  |  |  |
Federal deposit insurance corporation |  | ¥ 500,000 |  |
RMB [Member] | Minimum [Member] |  |  |  |
Concentration of Credit Risk (Details) [Line Items] |  |  |  |
Maximum coverage from FDIC |  |  |  | ¥ 500,000
RMB [Member] | Maximum [Member] |  |  |  |
Concentration of Credit Risk (Details) [Line Items] |  |  |  |
Maximum coverage from FDIC |  |  |  | ¥ 25,322,558

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