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China took a major step toward becoming a global aviation powerhouse as its homegrown large passenger plane, the C919, took to the sky on May 5. The flight makes China the fourth jumbo jet producer after the United States, Western Europe and Russia.

China was one of the top five goods export destination for 42 US states last year. Many US states generate substantial economic value from service exports, from licensing royalties to tourist spending, according to the Washington-based trade and investment promotional agency.

China stepped up efforts last year in preventing abnormal financial volatility and properly handling local government debt risks.

China spent 801 billion yuan on railway projects and put 3,038 km of new tracks into operation in 2017, exceeding its annual targets of 800 billion yuan of investment and 2,100 km of new lines, according to the China Railway Corporation.

China must improve innovation capabilities for key and core technologies and keep a firm hold on the initiative in the development of science and technology to offer a strong technological guarantee for China's development, Xi pointed out.