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Major sources of stress for delivery workers include low wages and insufficient benefits, lack of understanding of their job from customers and the public, long working hours and little chances of promotion, the survey said.
"This year marks the 70th anniversary of the founding of the People's Republic of China, and is a crucial year for building a moderately prosperous society in all respects and realizing the first centenary goal," he said.
The performance ended with a violinist and a pianist playing a piece work composed by Finnish composer Jean Sibelius.
The fixed-asset investment on railways stood at 802.8 billion yuan (about 117 billion U.S. dollars) with more than 4,600 km of new railways launched in 2018.
Tamim said that faced with current international political and economic situation, Qatar and China should further enhance cooperation, which was also the purpose of his visit.
来源：资阳报