China is quietly moving its Taiwan war plan a step forward, fielding new HQ‑16F air‑defence missiles in Fujian just as U.S. ATACMS and HIMARS arrive on the island. With the upgraded system doubling previous ranges and improving anti‑jamming, Beijing is building a denser shield opposite Taiwan while U.S. advisors embed in Taipei and tense standoffs keep edging both sides closer to open conflict.