Movements in the Group’s provision for impairment of trade and notes receivables were as follows:
| 2017 | 2016 | |||||||
| RMB million | RMB million | |||||||
|
At 1 January |
115 | 216 | ||||||
|
Impairment losses recognized (note 10) |
6 | 8 | ||||||
|
Amount written off during the year as uncollectible |
(13 | ) | (100 | ) | ||||
|
Impairment losses reversed (note 10) |
(9 | ) | (9 | ) | ||||
|
Disposal of subsidiary |
(5 | ) | — | |||||
|
Provision included in held for sale |
(6 | ) | — | |||||
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At 31 December |
88 | 115 | ||||||
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