Taiwan simulated repelling a Chinese air landing assault on the strategically vital Penghu Islands on Monday, and will "throttle" mobile internet ‌for the first time during annual war games, according to Reuters

Annual war games in the Taiwan Strait are a recurring fixture, and the pattern across recent cycles has been that the exercises themselves move markets less than the real-world counterparty response, since Beijing's own live-fire activity and airspace incursions around the drills have historically been the volatility driver rather than the drill content. The distinction worth drawing here is between the defensive simulation, routine, and the mobile internet throttling, which is a first for the exercises and reads as civil-defence preparation for communications disruption, a component more associated with active-conflict contingency planning than with ceremonial signalling. Actors and form matter: the Penghu Islands sit on any plausible assault axis toward the main island, so rehearsing their defence is operational rather than theatrical, but neither side's exercise season has in past episodes, absent an accompanying diplomatic rupture or high-level visit, produced a sustained risk-off move beyond brief, localized episodes in the Taiwan dollar, regional semis, and China-sensitive equity baskets. Tells in comparable sequences have been the scale and proximity of any Chinese military response in the days around the games, shipping and insurance behaviour in the strait, and whether either side elevates rhetoric from defence ministries to head-of-state level. The calendar follow-on is the remainder of the exercise window and any unscheduled PLA announcement; precedent says the signal is in the reply, not the drill.