Trump was the president before Biden. But also, Biden and Xi were meeting, talking, there's several videos of these meetings. Both sides agreed they were on good terms and this whole sanction and blacklist wasn't the focus of communications/relations.
So I think there was far less chances of war under other leaders (as my comment was saying). Judging from your last sentence you agree the chances of open hostility is far greater under Trump, but you have a strange was of saying it.