O of course I don’t think China gaining power started with Biden don’t be silly. However having a weak American president certainly won’t harm china’s ambitions at all.
What makes you think he is weak?
All commentators including many in democrat america agree the withdrawal from Afghanistan was a disaster in terms of how it was managed. In press conferences he is closely managed by aides Obama did not rate him when Obama was president. But let’s wait and see how his term pans out but so far the signs are not good. You seem a big fan though ?
Big fan no, but going back on some of Trump's decisions yes, such as COP 21 commitments which Trump withdrew from, rekindled the relationship with US allies which were tense under Trump, his measures to fight Covid, even the Stock Échanges in US responded very well with his govt measures. He hasn't done anything great but got the basics right, especially correcting Trumps mistakes