Introduction to Xiqiutang: Xiqiutang is the most completely preserved house in the Hu family and is where Hu Xueyan’s youngest concubine lives. When Hu Xueyan fell in love with the concubine of the twelfth house, there was no room available in the family living area in the east, so he built one in the back garden. Because the house was built in autumn, it was named Xiqiutang because it quoted Liu Yong's poem "Ichiban Qingqiu".