The Big, BIg difference when it comes to China's semiconductor/solar industry is that 30-40%+ of these companies are state-owned, the rest are heavily subsidized, and the West comes nowhere even close to that sort of market manipulation. Even Biden's semiconductor handout is like ~4-5%.
This ain't a free market, and shouldn't be treated as one. China's foray into mass solar panel construction has seen mass subsidies and boom/bust cycles that would be impossible if they had to compete on the same playing field as the rest of the world. Over half of the solar panel manufacturers in China at one point or another were operating at a loss - and that was pre-covid when labor was chepaer. Why should the China be able to manipulate global markets with no repercussions?