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Commitments (Details) |  |  |  | 1 Months Ended
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May 02, 2021 USD ($) | May 08, 2020 USD ($) shares | May 08, 2020 CNY (¥) shares | Oct. 10, 2019 | Nov. 20, 2017 USD ($) | Nov. 20, 2017 CNY (¥)
Commitments (Details) [Line Items] |  |  |  |  |  |
Lease agreement, description |  |  |  |  | On November 20, 2017, Xi’an TCH entered into a lease for its office with a term from December 1, 2017 through November 30, 2020. | On November 20, 2017, Xi’an TCH entered into a lease for its office with a term from December 1, 2017 through November 30, 2020.
Monthly rental payment |  |  |  |  | $ 5,600 | ¥ 36,536
Lease expiry date |  |  |  |  | November 2020 | November 2020
Common stock annually | shares |  | 5,000 | 5,000 |  |  |
Description of engagement agreement | Under the agreement, upon the closing of the financing, the Company will pay Univest Securities, LLC (the “Underwriter” or “Univest”) a discount equal to 8% of the gross proceeds raised in the offering, a non-accountable expense allowance equal to one percent (1%) of the gross proceeds of the offering, as well as underwriter warrants to purchase that number of shares of common stock and accompanying Warrants equal to 5% of the shares of common stock and Warrants sold in the offering, including upon exercise by the Underwriter of its over-allotment option (“Underwriter Warrants”). |  |  | On October 10, 2019, the Company entered an investment banking engagement agreement with an investment banking firm to engage it as the exclusive lead underwriter for a registered securities offering of up to $20 million. The Company shall pay to the investment banker an equity retainer fee of 15,000 shares (post-reverse stock split) of the restricted Common Stock of the Company (10,000 shares was issued within 10 business days of signing the agreement, and remaining 5,000 shares will be paid upon completion of the offering). The agreement expired in March 2021. |  |
Proceeds from public offering | $ | $ 10,000,000 |  |  |  |  |
Commencement period | 5 years |  |  |  |  |
New Lease Contract [Member] |  |  |  |  |  |
Commitments (Details) [Line Items] |  |  |  |  |  |
Lease agreement, description |  |  |  |  | The Company entered a new lease contract for the same location from January 1, 2021 through December 31, 2023 with monthly rent of RMB 36,536 ($5,600), to be paid every half year in advance. | The Company entered a new lease contract for the same location from January 1, 2021 through December 31, 2023 with monthly rent of RMB 36,536 ($5,600), to be paid every half year in advance.
Monthly rental payment |  |  |  |  | $ 5,600 | ¥ 36,536
Chief Financial Officer [Member] |  |  |  |  |  |
Commitments (Details) [Line Items] |  |  |  |  |  |
Monthly salary |  | $ 2,300 | ¥ 16,000 |  |  |

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