The Chinese Embassy in Washington DC has issued a warning to its citizens traveling to the United States, telling them to be on their guard against public shootings, costly medical bills, and telecom fraudsters.

“Public security in the United States is not good. Shootings, robberies, and thefts are all frequent,” reads the embassy warning. “While traveling in the US, you should be alert to suspicious people around you and avoid going out alone at night.”

The embassy also warned Chinese tourists to be wary of a number of other dangers, including expensive medical bills, searches and seizures by customs agents, telecommunications fraud, and natural disasters.

On Tuesday, China’s Foreign Ministry voiced its support for the embassy’s warning, explaining that many Chinese tourists would head to the US during the summer travel season and that it was the embassy’s duty to warn them about the potential risks.

“The summer holiday is the peak season for Chinese citizens to travel to and come from the United States. It is totally within the scope of duty of the Chinese Embassy and consulates in the U.S. to issue such travel alert,” said Foreign Ministry spokesperson Lu Kang.

While the Chinese government has been known to warn its citizens of the dangers of visiting certain countries, this is typically concerning war-torn regions. This warning comes not only at the start of summer, but also as trade war threats continue to escalate between the world’s two largest economies.

The warning could signal that China plans, once again, to use the economic might of its tourists as a weapon in any potential dispute. After Seoul decided to go ahead with installing the US-backed THAAD missile defense system last year, Beijing responded by banning Chinese tour groups from visiting South Korea, causing serious damage to the country’s tourism sector.

In 2016, the US welcomed nearly three million Chinese tourists, combined they spent a whopping $33 billion.