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Since the channel was opened in 2001, over four million tonnes of cargo has been transported along the river, representing a trade volume of more than 30 billion yuan (4.6 billion U.S. dollars), but the route continues to face problems such as poor infrastructure and underutilization.

The two countries also agreed to exchange ambassadors and, in accordance with the provisions of the 1961 Vienna Convention on Diplomatic Relations, provide necessary assistance for the establishment of embassies and the performance of their respective duties on a reciprocal basis, it says.

"They used to follow their uncle back home in silence, but now it's hugs and laughs when their mum or dad picks them up," said the teacher.

Trade and economic relations between the country and China have been growing rapidly over recent years. So far, the Czech Republic has become the second-largest trading partner of China in the CEE region, and China has been the Czech Republic's second-largest trading partner in the world, next only to the EU. In 2015, their two-way trade topped 11 billion U.S. dollars.

Deep sea project contractors must have an emergency response mechanism and report immediately to authorities when encountering emergencies. They should take every feasible measure to reduce harm to people and the environment.