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Other non-current assets
12 Months Ended
Dec. 31, 2020
Miscellaneous non-current assets [abstract]  
Other non-current assets
25
OTHER
NON-CURRENT
ASSETS
As of December 31,
 
2020,
 
other than contract assets and contract costs, other
non-current
assets also comprise long-term prepaid expenses amounting to RMB4,445 million (as of December 31, 2019: RMB4,662 million), and certificates of deposit amounting to RMB15,000 million (as of December 31, 2019: RMB5,130 million).