There are even fears inside President Xi Jinping’s administration that a US-inspired coalition will challenge the Communist Party’s right to rule. An internal study from the Ministry of State Security, and cited by Reuters, warned that China should be prepared for a “worst-case scenario of armed confrontation.”
“If you’re a member of the Chinese Communist Party, you might read [the invocation of the May the Fourth movement] as encouraging people to challenge some of the existing parts of your political system. It didn’t quite say overthrow your leaders, but it certainly encouraged the rise of the masses, shall we say,” she told The Guardian newspaper."
Diplomacy can get insanely complicated, with thousands of pieces that can influence the outcome moving in what sometimes seems to be random directions.
In the relationship between China and America, there are powerful incentives on both sides to avoid overt conflict. There are also strong incentives from the benefits of cooperation. Not that we're likely to see much of that anytime soon.
So while I don't want to exaggerate the danger, it's worth mentioning the reckless behavior of the Trump administration is genuinely dangerous, and that there are a lot of people in the diplomatic and foreign affairs academic communities that are trying to get their sphincters unclenched.