What is the significance of the return of Taiwan Province Province in Ming Dynasty?

It should be during the Southern Ming Dynasty, when the Central Plains was already under the control of the Qing Dynasty (the time was 1662, the first year of Kangxi in the Qing Dynasty).

(1) After Zheng Chenggong acquired Taiwan Province Province, he established the first Han regime in Taiwan Province Province, which also brought the Han immigrants. Although Zheng Chenggong died in the same year when he captured Taiwan Province Province, his successors Zheng Jing and Zheng Keshuang continued to rule Taiwan Province Province for 2 1 year. Under the planning of Chen Yonghua, they introduced palaces, temples and various laws and regulations formulated by China, which laid the foundation for Taiwan Province Province to become a society dominated by Chinese culture in the future, not just another overseas Chinese port. Therefore, some scholars described this campaign as "deciding the fate of Taiwan Province Province in the next 400 years".

(2) Zheng Chenggong was the last powerful anti-Qing leader in Nanming. He moved his base camp to Taiwan Province Province, which broke down the anti-Qing morale and declared the end of the anti-Qing cause.

(3) As far as Zheng Jun is concerned, going to Taiwan Province Province also caused the collapse of internal morale, and many generals surrendered to the Qing Dynasty.

(4) For the Dutch East India Company, after losing its official stronghold, the trade route of "Southeast Asia-Official (re-exported to China)-Nagasaki (Japan)" was interrupted, and the trade volume with China also decreased sharply, resulting in great losses.