China is actively supplying Middle Eastern Nations the same as the USA, and they also claim complete control over Taiwan. They're also funding the Russia-Ukraine war by stockpiling massive amounts of oil from Russia. I think that more than qualifies the "kill you for oil" statement.
No, it doesn't. Taiwan seceded from them, they aren't trying to colonize it. America bombing Iraq and destabilizing SA governments is killing for oil. Buying oil from Russia is not that.
How is buying oil from Russia remotely similar to that? America actually does do that, btw, by supplying the Saudis with the weapons they need to genocide Yemen.