v3.20.1

Loan Receivable - Additional Information (Details) ¥ in Millions, $ in Millions		12 Months Ended
	Mar. 26, 2018 USD ($)	Dec. 31, 2019 CNY (¥)	Aug. 31, 2018 CNY (¥)
Loans And Leases Receivable Disclosure [Line Items]
Loan agreement due date description		The loan receivable became overdue on April 6, 2019. On April 30, 2019, the due dates of loan receivable and other receivables due from Beijing Biztour were extended to September 30, 2019. The controlling shareholder of Beijing Biztour made a personal guarantee and agreed with certain real estate property mortgage. The loan receivable and other receivables due from Beijing Biztour became overdue again since October 1, 2019.
Beijing Biztour
Loans And Leases Receivable Disclosure [Line Items]
Term of loan (in years)		1 year
Loan receivable	$ 2		¥ 7.5
Fixed annual interest	8.00%
Provision for loan receivable		¥ 17.4

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Fixed annual interest of loans receivable.

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Term of loan, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Amount, before allowance for credit loss, of financing receivable, classified as current.

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Amount of expense related loan transactions, lease transactions, credit loss from transactions other than loan and lease transactions, and other loss based on assessment of uncollectability from the counterparty to reduce the account to their net realizable value.

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