Chinese President Xi Jinping ordered the People's Liberation Army (PLA) to prepare for the battle on Friday when Taiwan's President Tsai Ing-Wen demanded international support to defend the island's democracy amid new threats to mainland unification.
Xi's comments were made during a meeting with top officials from the Central Military Commission (CMC).
"All military units must properly understand the key national security and development trends and strengthen their sense of unexpected distress, crisis and struggle," he said, according to South China Morning Post .
"[China must] prepare for a comprehensive military struggle from a new starting point … Preparation for war and combat must be deepened to ensure timely, efficient response," said Xi.
The comments come just days after Xi has declared that Taiwan is absolutely a part of China, the union between the two territories has encouraged and reserved the right to use force to make the self bring the eastern island under the control of the mainland.
Tsai condemned Xi's comments and rejected Chinese President's proposal "One Country, Two Systems." He told reporters in Taipei, "We hope that the international community can do this seriously and can support and help us." If a threatened democratic country does not get help, "we may have to ask which country could come next "Tsai said.
Last March, Xi Jinping reiterated the same sentiment at the National People's Congress, warning Taiwan that those who want to split China will be "doomed to failure" and "experience the punishment of history."
Taiwan became a self-governing island in 1949 after a bloody civil war, although it is still officially considered the Republic of China. Since the founding of the People's Republic some 70 years ago, Chinese leaders have put regaining control of the stubborn province on the agenda. However, Taipei has shown no interest in government by Beijing's ruling Communist Party.
China's hostility to the island has increased since Tsai and the independence movement of the 2016 Democratic Progressive Party won the presidential election. The mainland has never renounced the use of force to bring Taiwan under its control.
Despite fears of an invasion exacerbated by combat exercises near Taiwan, the director of SOAS University of London and political scientist Steve Tsang said. Last year, the PLA is unlikely to launch a military attack unless an agreement has been reached with the Trump government to prevent US interference.
"China is unable to do so over the next five years. Otherwise, an invasion could lose most of its frontline, advanced equipment, and troops, "he said.