Huang's billions are probs not going to impress the Chinese, who are investing multiples of that. The Chinese also consider developing their own (AI) semiconductors a national priority, with the US of the last 10-15 years having proven to them conclusively that Western supplies can not be relied upon. Their homegrown stuff is not as advanced as Nvidia on performance/watt yet, but it's cheap (especially compared to the multiple orders of magnitude inflated prices of Nvidia) and it works, and has built an AI industry in China that rivals the US.
So this ship sailed for Huang some time ago. I'm reading this announcement more as a "screw you guys, I'm going home" to Trump. The Orange Man has had Huang lick his boots, messed with his business with his trade wars and sanctions games, and paraded him in China now... and all for nothing, Trump has zero leverage on China, he has nothing to offer to China, and thus, nothing to offer to Huang either. All mouth and no trousers. Why would Huang hang around ...
Taiwan is where the semiconductor industry is at, and Taiwan is where Huang needs to be, too. The tech is there, the engineering is there, the manufacturing is also there, even if they branch a little to the US. The US semiconductor industry otoh is moving out of inertia by now, unable to keep up with the volume, and therefore, investment, and r&d of Taiwan. And all of that is before you take into account the US is basically in war with higher education by now, which does not bode well for any hopes of long term brain availability.