TAIPEI (Taiwan News) — The Ministry of National Defense tracked nine Chinese military aircraft, eight naval vessels, and two official ships around Taiwan between 6 a.m. on Sunday and 6 a.m. on Monday.

Seven of the nine People’s Liberation Army aircraft crossed the Taiwan Strait median line in the country’s southwestern air defense identification zone, according to the MND. 

In response, Taiwan sent aircraft and naval ships and deployed coastal-based missile systems to monitor PLA activity. 

So far this month, the MND has tracked Chinese military aircraft 330 times and ships 190 times. Since September 2020, China has increased its use of gray zone tactics by incrementally increasing the number of military aircraft and naval vessels operating around Taiwan. 

Gray zone tactics are defined as “an effort or series of efforts beyond steady-state deterrence and assurance that attempts to achieve one’s security objectives without resort to direct and sizable use of force.”