Date when the debt instrument is scheduled to be fully repaid, in YYYY-MM-DD format.

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+ Details

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Balance Type:	na
Period Type:	duration

- Definition

Reflects the total carrying amount as of the balance sheet date of debt having initial terms less than one year or the normal operating cycle, if longer.

+ References

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+ Details

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Balance Type:	credit
Period Type:	instant

- Definition

Description of borrowing classified as short-term upon issuance. Includes, but is not limited to, description of underlying arrangement, repayment terms, interest rate, collateral provided, restriction on use of asset and activity, and compliance with debt covenant.

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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.

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- Definition

The portion of the carrying amount of short-term borrowings outstanding as of the balance sheet date which accrues interest at a set, unchanging rate.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
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Name:	us-gaap_DebtInstrumentAxis=tc_ShortTermLoanFiveMember
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Short-Term Borrowings - Schedule of Short Term Borrowings (Details) ¥ in Thousands, $ in Thousands	6 Months Ended
	Jun. 30, 2024 CNY (¥)	Jun. 30, 2024 USD ($)	Dec. 31, 2023 CNY (¥)	Dec. 31, 2023 USD ($)	Dec. 31, 2022 CNY (¥)
Schedule of Short Term Borrowings [Line Items]
Principal amount	¥ 13,000	$ 1,789	¥ 15,687	$ 2,209	¥ 3,169
Loan 1 [Member]
Schedule of Short Term Borrowings [Line Items]
Maturity date	Sep. 08, 2024
Principal amount	¥ 2,000
Interest rate per annum	4.40%	4.40%
Name of bank	Jiangsu Bank
Loan 2 [Member]
Schedule of Short Term Borrowings [Line Items]
Maturity date	Oct. 30, 2024
Principal amount	¥ 3,000
Interest rate per annum	4.00%	4.00%
Name of bank	China Minsheng Bank
Loan 3 [Member]
Schedule of Short Term Borrowings [Line Items]
Maturity date	Jul. 07, 2024
Principal amount	¥ 1,000
Interest rate per annum	3.70%	3.70%
Name of bank	Bank of China
Loan 4 [Member]
Schedule of Short Term Borrowings [Line Items]
Maturity date	Jun. 14, 2025
Principal amount	¥ 2,000
Interest rate per annum	4.15%	4.15%
Name of bank	Beijing Bank
Loan 5 [Member]
Schedule of Short Term Borrowings [Line Items]
Maturity date	Jun. 14, 2025
Principal amount	¥ 5,000
Interest rate per annum	3.45%	3.45%
Name of bank	Industrial and Commercial Bank of China