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SUBSEQUENT EVENTS (Details) |  |  |  |  |  |  |  |  |  |  | 3 Months Ended | 12 Months Ended |  |  |
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Mar. 02, 2021 USD ($) shares | Feb. 12, 2021 USD ($) shares | May 27, 2020 | May 22, 2020 CNY (¥) ¥ / shares shares | Jan. 08, 2020 CNY (¥) ¥ / shares | Dec. 18, 2019 | Dec. 16, 2019 USD ($) $ / shares shares | Dec. 16, 2019 CNY (¥) | Dec. 04, 2018 | Nov. 29, 2018 USD ($) | Nov. 29, 2018 CNY (¥) | Apr. 19, 2018 USD ($) shares | Apr. 19, 2018 CNY (¥) shares | Dec. 31, 2020 ¥ / shares shares | Dec. 31, 2020 CNY (¥) ¥ / shares shares | Dec. 31, 2019 CNY (¥) shares | Mar. 02, 2021 ¥ / shares | Feb. 12, 2021 ¥ / shares shares | Dec. 31, 2020 $ / shares shares
Disclosure of non-adjusting events after reporting period [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Value of shares to be issued | ¥ |  |  |  |  | ¥ 500,000 |  |  |  |  |  |  |  |  |  | ¥ 16,045,000 | ¥ 6,266,000 |  |  |
Aggregate the number of share sale |  |  |  |  |  |  |  |  |  |  |  | 770,299 | 770,299 |  |  |  |  |  |
Warrants sold |  |  |  | 1,102,950 |  |  | 1,200,000 |  |  |  |  |  |  | 50,000 | 50,000 |  |  |  | 50,000
Gross Proceeds from pricing of public offering |  |  |  | ¥ 750,006 |  |  |  | ¥ 900,000 |  | $ 1,270,000 | ¥ 8,732,000 |  |  |  |  |  |  |  |
Warrants term |  |  | 5 years |  |  | 5 years | 5 years | 5 years | 5 years |  |  |  |  |  |  |  |  |  |
Warrants exercise price per share | (per share) |  |  |  | ¥ 0.79 |  |  | $ 0.82 |  |  |  |  |  |  |  |  |  |  |  | $ 1.27
Warrants exercisable term |  |  |  | 5 years |  |  | 6 months | 6 months |  |  |  |  |  |  |  |  |  |  |
Net proceeds for sale of common shares and warrants after deducting certain fees due to the placement agent and the Company's estimated transaction expenses |  |  |  | ¥ 595,000 |  |  | $ 748,000 |  |  |  |  | $ 1,200,000 | ¥ 7,952,000 |  |  |  |  |  |
Percentage of aggregate number of shares sold in offering |  |  |  | 5.00% |  |  | 5.00% | 5.00% |  |  |  |  |  |  |  |  |  |  |
Aggregate of warrants |  |  |  |  |  |  |  |  |  |  |  |  |  | 500,000 | 46,256 | 94,862 |  |  |
Proceeds from pricing of public offering |  |  |  |  |  |  |  |  |  | $ 1,070,000 | ¥ 7,332,000 |  |  |  |  |  |  |  |
Registration period of offering |  |  |  |  | 270 days |  |  |  |  |  |  |  |  |  |  |  |  |  |
Offering |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of non-adjusting events after reporting period [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Price per share | ¥ / shares |  |  |  |  | ¥ 3.57 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Aggregate the number of share sale |  | 588,236 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Warrants sold |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 588,236 |
Gross Proceeds from pricing of public offering | $ |  | $ 2,100,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Warrants term |  | 5 years |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Warrants exercise price per share | ¥ / shares |  |  |  |  |  |  |  |  |  |  |  |  |  | ¥ 4.46 | ¥ 4.46 |  | ¥ 2.37 | ¥ 3.57 |
Warrants exercisable term |  | 5 years |  |  |  |  |  |  |  |  |  |  |  |  | 5 years |  |  |  |
Net proceeds for sale of common shares and warrants after deducting certain fees due to the placement agent and the Company's estimated transaction expenses | $ |  | $ 1,860,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of aggregate number of shares sold in offering |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 5.00% |  |  |  |
Aggregate of warrants | 122,550 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from pricing of public offering | $ | $ 290,443 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

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