What is the reason why Penghu Island is called Windy Island?

Penghu Island, also known as "Magong Island", is the largest and most populous island among the Penghu Islands. In the southwest of Penghu Island, there is a big bay, a small bay and two small bays. When it is calm, it looks like a calm lake, so it is called "Pinghu". In Minnan dialect, "Ping" and "Peng" are similar in pronunciation, so they became the name of Penghu. The name of the horseman also comes from the word "horseman". Penghu Islands, located in the southern part of the Taiwan Province Strait, consists of 64 islands with an area of about 1.26 square kilometers. The islands in the area are listed, the harbors are criss-crossed, and the terrain is dangerous. It is the natural dividing line between the East China Sea and the South China Sea, a battleground for military strategists since ancient times, and a springboard for mainland culture to be introduced into Taiwan Province. According to their positions, the islands in Penghu Island can be divided into two groups: Nandao Formation is south of eight waterways, including Wang 'an Island (eight islands) Qimeiyu, Huayu Island, Maoyu Island, Dongjiyu Island, Xijiyu Island, Caoyu Island, Nandong Island, Tseung Kwan O Island, Xiyuping, Dongyuping Island, Toutouyu Island, Zhongzaiyan Island, Touyu Island and Dadai Island. Almost all the islands are volcanic islands, and the rocks are Quaternary basalt. North Island Group is located in the north of Bajiao Waterway, including Penghu Island, Fisherman Island (Xiyu Island), Baisha Island, Jibei Island, Niaoyu Island, Gupo Island, Hu Jingyu Island, Tongpanyu Island, Okura Island, Maochangyu Island, Jinyu Island and Mudou Island, with the largest area. Penghu was called Island Yi, Square Pot, Xiying, Zhou Zhou and Pinghu in ancient times. Westerners entered Penghu in the16th century, calling it "the land of fishermen". It was not until the 18th year from Yuan Shizu to Yuan Dynasty (128 1) that Penghu was formally incorporated into Chinese territory. It has been more than 700 years since then, more than 400 years before the development of Taiwan Province Province. However, compared with Taiwan Province Province, the development speed of Penghu Islands is very slow. However, it may take longer to trace the relevant history of the Penghu Islands. During the Qin and Han Dynasties, the first emperor went to the sea to seek immortality. Some people may have been to Penghu. According to historical records, from 607 to 6 10, Yang Di sent Zhu Kuan, He Man, A Ling, Jang Jin and others to Penghu and other places.