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China is the largest exporter of goods to the United States. Trade in goods between the US and China increased from 7 billion in 2002 to 9 billion in 2016, according to AmCham China.

China held about .08 trillion of US Treasurys as of January, up by .7 billion in that month, making it the world's second-largest holder after Japan. Foreign investors are holding about trillion worth US government bonds in total, according to data from the US Department of the Treasury.

China is stepping up the push to develop artificial intelligence in manufacturing to boost its productivity and inject new impetus into the country's economic growth, an official from the Ministry of Industry and Information Technology said on Thursday.

China has taken great strides since 2013 in environmental protection, with effective air pollution and other controls put in place, and it is working to bring its best practices to the world, the regional head of a UN development agency said.

China is now the world's second-largest economy, while its per capita income is still only about one-fifth of the average in areas with high incomes.