PREPAID EXPENSES AND OTHER CURRENT ASSETS (Details) ¥ in Thousands, $ in Thousands	Dec. 31, 2019 USD ($)	Dec. 31, 2019 CNY (¥)	Dec. 31, 2018 CNY (¥)
PREPAID EXPENSES AND OTHER CURRENT ASSETS
Prepaid expenses	$ 126,139	¥ 878,155	¥ 565,710
Tax recoverables	82,007	570,913	421,654
Staff advances	268	1,866	10,730
Interest receivables	2,063	14,359	12,037
Deposits	2,498	17,391	39,971
Loan to third parties	10,565	73,557	58,909
Other receivables	8,893	61,908	50,563
Prepaid expenses and other current assets	$ 232,433	¥ 1,618,149	¥ 1,159,574

Carrying value of amounts transferred to third parties for security purposes that are expected to be returned or applied towards payment within one year or during the operating cycle, if shorter.

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Amount, after allowance for credit loss, of financing receivable. Excludes financing receivable covered under loss sharing agreement.

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Amount of asset related to consideration paid in advance for costs that provide economic benefits in future periods, and amount of other assets that are expected to be realized or consumed within one year or the normal operating cycle, if longer.

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Amount paid to the staff as advance.

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