Because Xi Jinping has made China a lot more aggressively nationalistic and strategically antagonistic toward the West.
Western corporations used to exploit China for its cheap labour and lax regulations. Now they’re highly restricted, and CCP backed Chinese corporations have supplanted them.
After bootstrapping China with decades worth of free technology, China is now threatening technological supremacy over the US, and the US is doing everything it can to stifle their technological development.
Russia is more of a nuisance to Europe, which Trump doesn’t seem to care about—maybe we didn’t let him build his golf courses or something. Trump and whatever strategists he has advising him, also want to get Russia on their side and be less of a partner with China.