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Liu also urged efforts to promote polite tourist behavior in order to improve the tarnished national image of Chinese travelers.
"In comparison with the past, the breadth and depth of China's reform have been considerably expanded. In order to further promote reform, top-level design must be enhanced," Xi said.
Citing Angola's huge demand in infrastructure construction and China's strength in production capacity, technology and foreign exchange reserves, Li urged the two sides to lift bilateral cooperation in relevant areas to higher levels by dovetailing with each other and making full use of the market.
China has been always playing an active and a constructive role in the talks to promote the deal as soon as possible, Li said.
"Nigeria currently stands as the third biggest trading partner with China in Africa and is aspiring to be the biggest one," the vice president said ahead of Li's visit.
来源：资阳报