I don't care about what Trump does, I care about Pompeo, and Esper who are moving the PRC using the QUAD, and more military spending in the navy, and air force.
Except that doesn't actually address the issues with Chinese aggression and expansionism and kind of misses the point with the fact that US foreign policy with China is all over the place because Trump doesn't understand how foreign policy works.
1) the US needs to figure out a way to deal with the Belt and Road initiative, which is more a threat to US hegemony than the Chinese military itself by creating client states all over the world. That could range from bailing out countries' debt to China, offering competing terms or projects, or even just advocating for more US investment in counties in order to balance out Chinese influence.
2) Trump's causal abandonment and denigration of allies around the world actively undermines the ability to have large enough alliances and powers to counteract China's hostile strategies, particularly in the South pacific.
3) Military exercises and alliances don't mean much if the top leadership (i.e. the president) constantly signals an unwillingness to come to their allies' aid. The Secretary of State's words are meaningless if the president says something else.
Biden, for his many many faults, likely will maintain the QUAD military alliance and strengthen it by being more supportive of alliances in general (Obama's "pivot" to Asia was designed primarily to address the serious national security threats created by China and North Korea). Trump has already eroded those alliances and, for the most part, likely signaled to those allies that if they get attacked by an act of China, they're on their own.
And this is only on the national security front and not the economic front where Trump has essentially handed the PRC a major political win because China has essentially framed the trade war in patriotic terms as "resisting the American demands" while Trump's administration has been trying save face in ending a trade war that disproportionately harms key constituencies of his.
If China is a reason to vote for Trump, it's not because he's doing the right thing, it's because you want China to assume the hegemony that the US has enjoyed since the end of the Cold War.