Here are some:
Economically, they're an adversary; they undercut western manufacturing and all our manufacturing went there. They manipulate their currency. They interfere with foreign owned businesses. They steal IP. They're seeking to upset the global money standard. They entrap other nations with predatory loans for infrastructure. They trade with our other enemies and flaunt sanctions, etc, etc.
Ethically, they're our adversary: They use (basically) slave labor, unethical materials (e.g. live plucking), environmentally damaging materials (e.g. banned CFCs), they happily pollute the earth as if tomorrow isn't a concern. They are scraping the ocean clean to feed their people. They oppress their citizens, they operate a crude faux-democracy, they have embarked on an extremely damaging zero covid approach long after it ceased to be relevant to save face for creating it, etc, etc.
Politically, they're our adversary, insulting foreign politicians, trying to annexe land and sea that definitively isn't theirs (Tibet, "South China" Sea), engaging in brinksmanship to force the issue, etc.
These are all things from media stories that I can think of from the top of my head. Not exactly representation as a best friend.