| (b) | Reconciliation of profit before income tax to cash generated from operating activities: |
| Note | 2017 RMB million |
2016 RMB million |
2015 RMB million |
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Profit before income tax |
8,874 | 7,661 | 6,118 | |||||||||||||
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Depreciation charges |
13 | 12,963 | 12,418 | 11,766 | ||||||||||||
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Other amortisation |
13 | 360 | 332 | 227 | ||||||||||||
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Amortisation of deferred benefits and gains |
13 | (161 | ) | (131 | ) | (148 | ) | |||||||||
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Impairment losses on property, plant, equipment |
20 | 324 | 71 | 90 | ||||||||||||
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Share of associates’ results |
25 | (431 | ) | (509 | ) | (460 | ) | |||||||||
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Share of joint ventures’ results |
26 | (99 | ) | (102 | ) | (108 | ) | |||||||||
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Gain on disposal of property, plant and equipment and construction in progress |
15 | (989 | ) | (557 | ) | (312 | ) | |||||||||
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Gain on deemed disposal of equity interest in a subsidiary |
— | (90 | ) | — | ||||||||||||
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Fair value movement of derivative financial instruments |
29 | 64 | — | — | ||||||||||||
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Remeasurement of the originally held equity interests in a joint venture |
24(iv) | (109 | ) | — | — | |||||||||||
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Interest income |
(89 | ) | (89 | ) | (253 | ) | ||||||||||
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Interest expense |
16 | 2,747 | 2,465 | 2,188 | ||||||||||||
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Dividend income from other investments in equity securities and available-for-sale financial assets |
27 & 28 | (18 | ) | (14 | ) | (13 | ) | |||||||||
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Exchange (gain)/losses, net |
(642 | ) | 3,368 | 5,516 | ||||||||||||
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(Increase)/decrease in inventories |
(34 | ) | 18 | 55 | ||||||||||||
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Decrease/(increase) in trade receivables |
314 | (409 | ) | 103 | ||||||||||||
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(Increase)/decrease in other receivables |
(1,840 | ) | 637 | 418 | ||||||||||||
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Decrease/(increase) in prepaid expenses and other current assets |
81 | (224 | ) | (184 | ) | |||||||||||
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Increase/(decrease) in net amounts due to related companies |
15 | 186 | (153 | ) | ||||||||||||
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Increase/(decrease) in trade payables |
222 | (597 | ) | 843 | ||||||||||||
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(Decrease)/increase in sales in advance of carriage |
(567 | ) | 1,289 | 1,030 | ||||||||||||
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Increase in accrued expenses |
223 | 2,066 | 695 | |||||||||||||
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Increase/(decrease) in other liabilities |
762 | (186 | ) | (277 | ) | |||||||||||
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Increase/(decrease) in deferred revenue |
430 | 86 | (75 | ) | ||||||||||||
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Increase in provision for major overhauls |
719 | 194 | 630 | |||||||||||||
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Decrease in provision for early retirement benefits |
(3 | ) | (7 | ) | (20 | ) | ||||||||||
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Increase/(decrease) in deferred benefits and gains |
362 | (195 | ) | 181 | ||||||||||||
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Cash generated from operating activities |
23,478 | 27,681 | 27,857 | |||||||||||||
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