Perhaps I see more of a gradation in policy between "go fully isolationist against" and "work in tandem with". I don't think it's likely that Biden will do the second one.
That said, he has been joining in on the anti-China rhetoric with everyone else:
This seems rather unlikely to me.
Obama did not go fully isolationist against China like Trump has, why wouldn't we expect Biden to continue that strategy.
Perhaps I see more of a gradation in policy between "go fully isolationist against" and "work in tandem with". I don't think it's likely that Biden will do the second one.
That said, he has been joining in on the anti-China rhetoric with everyone else:
https://www.nytimes.com/2020/09/22/world/asia/biden-china-election-trump.html
https://www.japantimes.co.jp/news/2020/09/29/asia-pacific/politics-diplomacy-asia-pacific/joe-biden-china-policy-us/
https://www.nbcnews.com/news/world/would-biden-get-tough-china-n1239203