Why did the Qing Dynasty unify Taiwan Province Province by force?

The economic blockade of the Qing government failed to achieve the expected goal, and the peace talks failed frequently. The Zheng clique invaded the mainland by the "San Francisco Rebellion", which posed a serious threat to the southeast coastal areas, prompting the Qing rulers to gradually realize that the possibility of solving the Taiwan Province problem by purely peaceful means did not exist, and to achieve reunification, they had to resort to force. In April of the 20th year of Kangxi (168 1), Yao Qisheng, the governor of Fujian in the Qing Dynasty, reported to the court that Zheng Jing had died in Taiwan Province, and the Zheng Group was in civil strife because of the struggle for power and profit. Emperor Kangxi thought it was time to unify Taiwan Province Province by force, and in June of that year he made a decisive strategic decision to March into Taiwan Province Province and Penghu.

1. Historical conditions for the Qing government to unify Taiwan Province Province by force.

The infighting of Zheng Group in the twenty years of Kangxi provided an opportunity for the Qing government to unify Taiwan Province Province. At this time, the Qing Dynasty was politically stable, economically developed and militarily powerful, which already possessed the main conditions for unifying Taiwan Province Province. These conditions were not formed overnight, but the result of many years' efforts in the Qing Dynasty.