How did Taiwan Province Province and China deal with it during the Qing Dynasty? Can the mainland go to Taiwan Province Province at any time then?

This information is taken from the Internet:

"/kloc-At the beginning of the 7th century, the Qing imperial government initially adopted a negative policy towards the rule of Taiwan Province Province. The policy of governing Taiwan Province tries to operate and build at a lower cost, and encourages people to reclaim land. First, hundreds of thousands of Han Chinese who had lived in Taiwan Province Province during the Hezheng period were forcibly repatriated to the mainland of the Qing Empire, and then the immigration of mainlanders to Taiwan Province Province was strictly restricted, and it was forbidden to bring their families. However, many people in the coastal provinces of the Qing Empire ventured into Taiwan Province and settled in the west of Taiwan Province Province. Later, they gradually began to have it. 」

The Qing Dynasty didn't want to rule Taiwan Province Province. It's really a place of boils. Infectious diseases such as cholera, malaria and plague often spread on a large scale (at that time, all these diseases ended in death), and the aborigines simply couldn't control it (the map of Taiwan in the Qing Dynasty actually only had the left half of Taiwan Province Province, and the right half could neither control it nor wanted to control it). The purpose of controlling immigrants who come to Taiwan to reclaim land is to avoid another mutiny like Zheng Chenggong's. If I remember correctly, residents on the southeast coast of the mainland must retreat five miles inland and are not allowed to get close to the sea. If people who come to Taiwan Province for reclamation are not allowed to bring their families, how can Taiwan's population increase? That is to say, they intermarry with Pingpu people (the indigenous people of Pingdi), so most people in Taiwan Province Province today are not entirely of China origin.

It was not until 1885 that the Qing Dynasty established a government in Taiwan Province Province that Liu Mingchuan became the first governor's government and was ceded to Japan in 1895. The Qing Dynasty's substantial rule and construction of Taiwan Province Province lasted only ten years.