The Taiwanese government throttled national internet access this week as part of a multilevel military drill testing the island’s resilience in the face of a hypothetical Chinese invasion.

Access was restricted for approximately 30 minutes on Monday as part of the annual Han Kuang defense exercises, which are scheduled to conclude on Friday. Taiwanese military personnel are currently running drills simulating an invasion by Beijing, including exercises in transportation, anti-airdrop, and live-ammunition training.