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Financial Risk Management Objectives and Policies - Maturity Profile of Financial Assets and Liabilities Based on Contractual Undiscounted Payments (Detail) ¥ in Thousands, $ in Thousands | Dec. 31, 2021 CNY (¥) | Dec. 31, 2021 USD ($) | Dec. 31, 2020 CNY (¥)
--- | --- | --- | ---
Financial assets |  |  |
Cash and bank balances | ¥ 5,331,555 | $ 843,307 | ¥ 6,447,538
Financial assets | 12,434,653 | 1,966,825 | 14,612,382
Financial liabilities |  |  |
Trade and other payables (Note 22) | 9,827,840 | 1,554,497 | 10,302,531
Lease liabilities | 40,531 | 6,410 | 39,778
Financial liabilities | 12,019,157 | 1,901,103 | 12,486,410
Liquidity risk [member] |  |  |
Financial assets |  |  |
Trade and bills receivables | 6,961,657 | 1,101,145 | 8,082,391
Other receivables, excluding tax recoverable | 140,835 | 22,277 | 76,195
Cash and bank balances | 5,331,555 | 843,307 | 6,447,538
Quoted equity securities | 606 | 96 | 6,258
Financial assets | 12,434,653 | 1,966,825 | 14,612,382
Financial liabilities |  |  |
Loans and borrowings | 2,231,880 | 353,023 | 2,277,417
Trade and other payables (Note 22) | 9,775,626 | 1,546,238 | 10,216,632
Lease liabilities | 41,771 | 6,607 | 47,399
Financial liabilities | 12,049,277 | $ 1,905,868 | 12,541,448
Liquidity risk [member] | One year or less [member] |  |  |
Financial assets |  |  |
Trade and bills receivables | 6,961,657 |  | 8,082,391
Other receivables, excluding tax recoverable | 140,835 |  | 76,195
Cash and bank balances | 5,221,555 |  | 6,307,538
Quoted equity securities | 606 |  | 6,258
Financial assets | 12,324,653 |  | 14,472,382
Financial liabilities |  |  |
Loans and borrowings | 2,130,356 |  | 1,753,142
Trade and other payables (Note 22) | 9,586,901 |  | 10,025,069
Lease liabilities | 28,121 |  | 24,313
Financial liabilities | 11,745,378 |  | 11,802,524
Liquidity risk [member] | Two to five years [member] |  |  |
Financial assets |  |  |
Cash and bank balances | 110,000 |  | 140,000
Financial assets | 110,000 |  | 140,000
Financial liabilities |  |  |
Loans and borrowings | 101,524 |  | 524,275
Trade and other payables (Note 22) | 188,725 |  | 191,563
Lease liabilities | 13,650 |  | 22,761
Financial liabilities | ¥ 303,899 |  | 738,599
Liquidity risk [member] | More than five years [member] |  |  |
Financial liabilities |  |  |
Lease liabilities |  |  | 325
Financial liabilities |  |  | ¥ 325

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