See that guy in the potrait, he is Sun yat-sen. Founder of the Republic of China (Taiwan).
He has a famous saying that goes:
天下大势,浩浩荡荡,顺之者昌,逆之者亡
translate:
The (strategic) trend/swing/course is mighty and mighty, those who follow it will prosper, and those who go against it will perish
Many people in China agreed with him, and the Xinhai revolution in 1911 that he led succeeded in overthrowing the last dynasty, the Qing Dynasty and become ROC.
The whole of China recorded history could be described as a cycle of stable dynasty and then deteriotion after a period, then revolution with chaos of warlords/factions fighting/competing with each other for control of China, and when things become clear that there is a winner, everyone else would then lessen resisting and rally together under one.
That is because the Chinese people remember how good it is to be united with peace and stability. After all, China is probably the civilization that enjoy the most organized and stable environment for most of human history.
And that statement that Sun Yat-Sen said, captured the sentiment that many Chinese would hold as almost self-evidence truth.