What is Siyuan Hall?

"Siyuantang", according to the legend of the older generation, Zhong Sun, who moved to Longmen to settle down, has two sons, the eldest son Sun Zhi and the youngest son QIA. It turned out that the descendants of Sun Shi's two brothers * * * used an ancestral temple. A year ago, the portraits of their ancestors hung in the ancestral hall. There are many young descendants, so they first come to the ancestral hall and hang up the portraits of their ancestors. The sons of Sun Zhi, the eldest son, looked uncomfortable and walked out of the ancestral temple angrily. Construction started on the 30th of this year. By the thirteenth day of the first month (Longmen people will hang up lights), the new ancestral hall will be built and started. Since then, there have been two ancestral halls in Longmen Sun Shi, namely, the old ancestral hall (Jade Qing Hall) and the new ancestral hall (Siyuan Hall). Children and grandchildren hang portraits of their ancestors in the old ancestral hall (Qing Yu Hall) and the new ancestral hall (Siyuan Hall) respectively, but no matter whether the descendants of the eldest son Sun Zhi have fame or the younger son have fame, they must make two plaques and hang them in the old ancestral hall (Qing Yu Hall) and the new ancestral hall (Siyuan Hall) respectively.