Chixi Building is also called "Red Mao Building", Chixi Building has undergone more than 300 years of changes in the Ming, Zheng and Qing Dynasties, and can be said to be the epitome of Taiwan's history, and is also a witness to the historical changes in Tainan since the 17th century. From Zheng Chenggong's time as the highest administrative institution of the island to the restoration after the Qing Dynasty was destroyed, its architectural features also range from Dutch castles to Chinese architecture, and today it is not only an outdoor museum, but also the most famous monument and spiritual symbol of Tainan.