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Cheng also participated in writing China's first academic document for atomic bomb research and experiments, designing a plan for setting off an atomic bomb at an iron tower higher than 100 meters, and planning the missions and formation of the institute of nuclear weapons experiments.

Zhang proposed to enhance exchanges between the two countries' parliaments at various levels.

In order to further consolidate bilateral cooperation, he suggested that the two sides stick to the four principles of treating each other sincerely and equally, consolidating solidarity and mutual trust, jointly pursuing inclusive development and promoting innovation in bilateral practical cooperation.

Another 5.7-magnitude quake hit the same area at 5:24 p.m. at a depth of 5 km, followed by more than a dozen quakes under 5-magnitude, the center added.

It is a basic requirement of macro-control to keep the economic development in a reasonable range, Li said, noting that China's economic development has shown some positive changes with a smooth start this year.