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Fourthly, China will innovate its cooperation with Africa to make it more efficient, according to Wang. Chinese enterprises are encouraged to directly invest more in Africa, and align regional infrastructure construction with local industry development, so that African economy can generate the self-reliance momentum, decrease fiscal burden and financial risks, he added.

Stressing that Tibet affairs are purely China's domestic affairs and allow no interference from other countries, the statement said China's Tibet and Tibetan areas in the other four provinces are open to people from around the world.

Rama Nemani, a research scientist at NASA's Ames Research Center and a co-author of the study said: "When the greening of the Earth was first observed, we thought it was due to a warmer, wetter climate and fertilization from the added carbon dioxide in the atmosphere."

NEW DELHI, Dec. 21 (Xinhua) -- China and India said here Friday that establishing the China-India high-level people to people exchanges mechanism is an important measure to develop the all-round bilateral relations between the two countries.

The urban unemployment was at 3.8 percent by the end of 2018.