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Accounts receivable, net (Tables)

12 Months Ended

Dec. 31, 2019

Accounts receivable, net

Schedule of accounts receivable, net

​

​	​	​	​	​
​	​	December 31,
​	​	2018	​	2019
​		RMB		RMB
​	​	​	​	​
Accounts receivable, gross		206,772		763,004
Less: allowance for doubtful receivables		(8,344)		(986)
​	​	​	​	​
Accounts receivable, net		198,428		762,018

Summary of allowance for doubtful accounts

The following table summarizes the details of the Group’s allowance for doubtful accounts:

​

​	​	​	​	​	​	​
​	​	For the year ended December 31,
​	​	2017	​	2018	​	2019
​		RMB		RMB		RMB
​	​	​	​	​	​	​
Balance at the beginning of the year		(55,220)		(7,356)		(8,344)
Additions charged to general and administrative expenses, net		(3,049)		(1,198)		(117)
Write-off during the year		50,913		210		7,475
​	​	​	​	​	​	​
Balance at the end of the year		(7,356)		(8,344)		(986)

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- Definition

Tabular disclosure of allowance for doubtful credit losses of accounts receivable.

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- Definition

Tabular disclosure of the various types of trade accounts and notes receivable and for each the gross carrying value, allowance, and net carrying value as of the balance sheet date.

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