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"By hammering on each wooden railroad tie, workers can tell how much it has eroded and when to replace them with new ones," Dong said, adding a routine check of the ties is arranged once a month.

"China has abundant gold mine reserves. By the end of 2017, China's proven reserves topped 13,195.6 tons, up 8.45 percent year-on-year," said Zhang Yongtao, vice-chairman of the China Gold Association. "China is also the world's leading gold manufacturer, with output topping the world's chart for 11 years in a row.

"China is not the only one that wants to conclude a trade deal. The US wants it, too," Geng said at a regular news conference. "American people, especially consumers, strongly oppose the trade war and the additional tariffs on Chinese goods. Their voice speaks volumes."

"But the free schooling program is not enough to attract all the children to school, because there can be many issues hindering them from coming to school," Halldorsson says if a family is not able to secure basic food needs, many children may be forced to work instead of attending school.

"Canada is one of the greatest hockey powers in the world. Ontario is the birthplace and the most advanced area of women's hockey," said Jeanette Han, director of the Chinese Ice Hockey Association North America Center, who thanked the Canadian partners for their help. "They have spent great resources and efforts to help us develop women's hockey," Han said.