An undersea cable near Taiwan was damaged, raising concern over Chinese gray-zone activity, according to JAPAN Forward. Separately, a study cited by The Japan Times found China has been testing a boosted naval presence east of Taiwan — the Pacific-facing side of the island, as opposed to the strait — with an eye on a blockade scenario.

Neither incident is confirmed as a deliberate rehearsal. But both land in the same week as Taiwan's Han Kuang 42 exercise, and point toward pressure that stays below the threshold of open conflict while eroding Taiwan's warning time. The east-of-Taiwan axis matters: it's the approach the United States and Japan would use to reinforce the island in a crisis, so a Chinese force able to contest it changes the geometry of any blockade attempt.

Taiwan's answer is Han Kuang 42, which defense analyst Mick Ryan says tests whether Taiwanese society as a whole — not just the armed forces — can function under sustained pressure, according to Futura Doctrina. The drill's premise mirrors the threat it responds to: cable-cutting and naval pressure are civilian-facing tools aimed at ports, shipping and public confidence as much as at warships.

Why it matters: Taiwan sits at the centre of global semiconductor manufacturing. A sustained blockade or cable campaign would not stay a regional story — it would test how far Washington and Tokyo are willing to go to answer pressure that never crosses into open war.
  • Whether further cable incidents occur near Taiwan or other Indo-Pacific chokepoints
  • Whether China's east-of-Taiwan naval presence becomes a standing posture rather than an episodic test
  • What Han Kuang 42's after-action review says about civilian and logistics resilience, not just military readiness