Ageing analysis of accounts receivable that are not impaired is as follows:
| December 31, | ||||||||
| 2016 | 2017 | |||||||
| RMB | RMB | |||||||
| (restated) | ||||||||
|
Not past due |
19,418 | 19,623 | ||||||
|
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|
Less than 1 month past due |
1,180 | 1,518 | ||||||
|
1 to 3 months past due |
867 | 955 | ||||||
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|
|
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|
Amounts past due |
2,047 | 2,473 | ||||||
|
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|
|
|
|||||
| 21,465 | 22,096 | |||||||
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