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v3.21.1

Prepayment and other current assets - Movements in pre (Details) ¥ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 CNY (¥)
Prepayment and other current assets |
Additions | ¥ 16,573
Balance at the end of the year | ¥ 16,573

X
- Definition The amount of allowance for Prepayment and other current assets period increase or decrease. + References No definition available. + Details
Name: | tc_AllowanceForPrepaymentAndOtherCurrentAssetsPeriodIncreaseOrDecrease
Namespace Prefix: | tc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount of prepayment and other current assets, allowance + References No definition available. + Details
Name: | tc_PrepaymentAndOtherCurrentAssetsAllowance
Namespace Prefix: | tc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- References No definition available. + Details
Name: | us-gaap_PrepaidExpenseAndOtherAssetsCurrentAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration