The Chinese aircraft and vessels were tracked  between 6 a.m. on Sunday (Dec. 25) to 6 a.m. on Monday (Dec. 26).

Of the 71 People’s Liberation Army (PLA) aircraft, 47 were tracked in Taiwan’s air defense identification zone (ADIZ), according to the MND. Twelve Shenyang J-11 fighter jets, six Sukhoi Su-30 jet fighters, 10 Chengdu J-10 fighter jets, and one CASC CH-4 reconnaissance drone crossed the Taiwan Strait median line, reports Taiwan News.

Another 18 Shenyang J-16 fighter jets crossed the median line or entered the southwest corner of Taiwan’s ADIZ. Meanwhile, one Shaanxi Y-8 electronic warfare plane, one Shaanxi Y-8 anti-submarine warfare plane, one KJ-500 airborne early warning and control aircraft, and one Guizhou WZ-7 reconnaissance drone were also monitored in the southwest sector of the ADIZ, the news portal reported.

Taiwan, as a response, sent aircraft, naval ships, and used land-based missiles to monitor the PLA aircraft and vessels.