The Chinese government was working with the US government to crack down on drug smuggling. However, the US government keeps hitting them with more and more san

The Chinese government was working with the US government to crack down on drug smuggling. However, the US government keeps hitting them with more and more sanctions, and is calling the entire One China Policy into question, so China stopped cooperating on a range of issues, including drug smuggling. The US government says it wants to separate these issues out, but the Chinese government doesn't want to go out of its way to help a foreign government that's actively trying to destroy the Chinese high-tech industry with sanctions.