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Commitments and contingencies (Details 1)
Dec. 31, 2020
CNY (¥)
Investment Commitment  
Capital commitments and Long-Term Debt Obligations  
Investment commitment contracted but not reflected in the balance sheet ¥ 5,865,700,000
Capital commitments  
Capital commitments and Long-Term Debt Obligations  
Total commitments contracted but not yet reflected ¥ 7,649,562,000