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After having warned Chinese students and academics on Monday about risks involved in studying in the United States , China on Tuesday widened its warning to include Chinese companies and tourists.

“In recent days, there have been incidents of gun violence, robberies and thefts in the United States,” China’s Ministry of Culture and Tourism said.

“The department reminds Chinese tourists to fully evaluate the risks of going to the United States, to understand the maintenance of public order of their destination, the laws and regulations, and to conscientiously raise their awareness of safety measures to ensure their safety.”

Chinese companies and citizens in the United States should also be aware of harassment from law enforcement agencies, China’s Foreign Ministry added.

Relations between the world’s two largest economies have nosedived in recent months due to a bitter trade war, US sanctions against Chinese telecoms giant Huawei Technologies Co Ltd and US support for Chinese-claimed Taiwan.

Tensions rose sharply in May after US President Donald Trump’s administration accused China of having “reneged” on its previous promises to make structural changes to its economic practices.

Washington later slapped additional tariffs of up to 25% on $200 billion of Chinese goods, prompting Beijing to retaliate.