China's new memory-chip maker just crashed semiconductor and AI stocks worldwide — bad for US chipmakers, Korea, and the whole AI trade, but a direct hit at American tech dominance.

• A new Chinese chipmaker, CXMT, went public and soared, signaling China can now mass-produce the memory chips that data centers and AI need.
• Korea's stock market crashed almost 8% and halted trading, because Samsung and SK Hynix — which control most of the world's memory chips — now face real Chinese competition.
• China plans the same playbook it used on EVs and solar: flood the market and slam prices down, wiping out the fat profits Micron and others enjoyed during the AI boom.
• Cheap Chinese capital is a big edge — Chinese firms borrow far cheaper than US ones, letting them build faster and outlast American rivals in a price war.
• China also reportedly built its own chipmaking machines, so US export controls backfired and pushed Beijing toward going it alone — hammering ASML, Lam Research, and Applied Materials.

Outlook: If Chinese pressure keeps driving down chip and AI compute prices, expect more pain for US chip and AI stocks, with risk of a broader market drop.