Apart from Chinese, one U.S. military plane had also entered Taiwan’s air defense identification zone.

During the day on Sunday, China sent one People’s Liberation Army Air Force (PLAAF) Shaanxi Y-8 reconnaissance plane, two Chengdu J-10 fighter planes, and two Shenyang J-11 fighter jets into the southwest corner of Taiwan’s ADIZ, according to the MND. Then on Sunday night, two more Shenyang J-11 fighter planes also intruded into the southwest corner of Taiwan’s identification zone, reports Taiwan News.

The US government last month urged China to cease its military, diplomatic, and economic pressure against Taiwan.

"The United States notes with concern the pattern of ongoing PRC attempts to intimidate its neighbors, including Taiwan," the US State Department said in a statement.

The US urged China to engage in meaningful dialogue with Taiwan’s democratically elected representatives.

Interestingly, Taiwan sees itself as an independent nation.

However, China considers it as a breakaway region.