Introduction to Guangjia Hall, the former residence of Cai Chang: The former residence of Cai Hesen and Cai Chang was built in the late Qing Dynasty. It has a brick and wood structure with a total area of more than 550 square meters. It is a bungalow with one vertical and three horizontal directions. Cai Chang was born here on May 14, 1900, and spent more than 8 years of childhood here with his brother Cai Hesen. In 1985, a gold-lettered mahogany plaque with "Cai Hesen's Former Residence" inscribed by Deng Xiaoping was hung on the gate of the former residence. Cai Chang (1900-1990), formerly known as Cai Xianxi, was the oldest female Red Army soldier in the Red Army's Long March, a feminist leader, a proletarian revolutionist, and one of the leaders of the women's liberation movement.