Movements in the provision for impairment of accounts receivable are as follows:
2017 | 2016 | 2015 | ||||||||||
RMB | RMB | RMB | ||||||||||
At beginning of the year |
2,023 | 523 | 516 | |||||||||
Provision for impairment of accounts receivable |
2,813 | 1,633 | 32 | |||||||||
Receivables written off as uncollectible |
(58 | ) | (97 | ) | (12 | ) | ||||||
Reversal of provision for impairment of accounts receivable |
(7 | ) | (36 | ) | (13 | ) | ||||||
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At end of the year |
4,771 | 2,023 | 523 | |||||||||
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