PLA 7 Sorties on May 21 — 6 Cross Median Line Into N/SW ADIZ; 7 PLAN Vessels + 1 Official Ship; Activity Eases After May 20 24-Sortie Surge

Taiwan's Ministry of National Defense detected 7 PLA aircraft sorties in the 24-hour window ending at 06:00 local time (UTC+8) on May 21, 2026 — a significant step-down from the 24 sorties recorded on May 20 but consistent with the sustained gray-zone pressure pattern that has characterized the post-Trump-Xi-summit period. Of the 7 sorties, 6 crossed the Taiwan Strait median line and entered Taiwan's northern and southwestern ADIZ sectors. Seven PLAN vessels and 1 official ship were simultaneously operating around Taiwan — maintaining the elevated naval presence established during the post-summit phase. Taiwan's ROC Armed Forces dispatched combat air patrol (CAP) aircraft, naval vessels, and coastal missile systems in response as standard. The PLA's oscillating sortie pattern — cycling between high-intensity days (May 20: 24 sorties; May 7: 22 sorties; May 2: 29 sorties) and lower-intensity days (May 21: 7 sorties; May 3: 1 sortie) — reflects the gray-zone pressure strategy of maintaining Taiwan's defensive forces at continuous high readiness without a declared exercise or clear escalation threshold. Analysts at AEI note that PLA air-sea operations around Taiwan set new records in early 2026 as reported by Jane's OSINT. The full May 2026 sortie sequence: 4→29→1→2→1→0→22→12→8→12→7→9→2→3→15→6→7→13→24→7.