As always America usually follows up these summits with an aggressive action.
China will have to learn the hard way
When Americans talk, it's like farting. They have no sense of credibility or responsibility towards what they say and cannot connect thier words to their actions. When I saw Biden's warm open, I immediately started laughing because he is addressing a man whom he once not too long ago, called a "thug." China knows well by now how the US behaves; it's just hard to believe that anyone would shower you with comments of friendship and candidness one day then commit hostile actions against you the next day with nothing gone awry in between. You have to see it for yourself... many times to believe it because it just makes no sense at all. Americans actually don't believe that they are behaving maliciously; American culture is one where two neighbors can be chatting like friends one day and the next day, one recieves a notice from a lawyer that his rosebush has a branch extending 4 inches across the property line. To a Chinese person, if you sue me, I expect it's because we've tried and failed several times to resolve the issue, our friendship is over and it's war between us. To Americans everything is separated and independent of each other and nothing is assumed without contractual obligation (hence, suing someone after an amicable discussion). American interpersonal culture is primitive and quite frankly autistic. Chinese interpersonal culture is highly advanced where every one of a person's actions is connected to the person and thus connected to his other actions in a fluid and coherent web/entity while American interpersonal culture is more like a bunch of scattered random items. While Chinese people are well-versed at making things, even the most uncomfortable things, understood without directly saying them, Americans are still figuring out how to make what one said/did yesterday coherent with what one is saying/doing today.
China does not want to waste time playing such a nonsensical and mentally deficient game, but its counterpart is simply not able to understand a smarter man's game so it's what we're stuck with: talk nice, don't give them anything in good will because you will receive nothing back other than an autistic stare. Everything is transactional at best.