Tibet, Vietnam.....
Lots of other countries are afraid of an invasion in south east Asia, at minimum a seizure of their fishing territories and waters.
Currently we are discussing a possible invasion of Taiwan.
Oh there's also the modern border conflicts with India and the Sino-Indian war in 1962 and flare ups since.
All of which is to say, don't mistake an inability to project power outside of their region with an unwillingness to be an imperialist bully. China was involved in the Mali war with the UN, and were a Chinese company to have it's investments in insert African or Latin American country threatened by a "socialist" government nationalizing it they would be just as likely to pull the same BS as the US did in Latin America in the 20th century if they could actually project power there.
And they will be closed after dark too, somehow.