Located at Xueqian Street in the city area of Changshu, Yanzi Memorial Temple is a place where ancient people worshiped Yan Yan. The temple underwent several rounds of renovation throughout the history, and today there remain three main halls. The three of them experienced a re-building project in the 22nd year of Emperor Chenghua’s reign of the Ming Dynasty by removing their old structures formed during the Song and Yuan Dynasties, but the original style was basically preserved. Facing south, the temple features a single-eave gable and a hip roof with nine purlins, eight rafters and eight roof beams. The architect adopted a post and lintel construction for the hall whose central bay was supported by four principal nanmu columns. The construction carries a flat-beam frame and the columns are set on wooden bases. The height divergences in different parts of the roof truss make the roof curves look gentle and smooth. All the wing butts bear an upward curve exhibiting fineness and fullness. The hall is 20 metres in width and 6.5 meters in depth, and thus the building takes a square form. The ridge height of the hall reaches 8.1 metres. Upon the girder the visitor may find a record of a renovation of the hall. These notes were written by Zeng Guofan with a painting brush in the 11th year of Emperor Tongzhi’s Reign of the Qing Dynasty (1872) after his supervision of the repair work here. As the oldest housing construction in Changshu, this memorial temple serves as a classic example for the study of ancient temples for the purpose of commemoration or worshiping ancestors in the region south of the Yangtze River. There are two tablets in the temple, one of which is an imperial edict tablet erected in the 11th year of Dade Reign (Oljeitu Khan’s reign) of the Yuan Dynasty, and thus has significant historical value for the study of the Yuan Dynasty. Yanzi (506 BC—443BC), with the given name Yan, styled himself Ziyou. He was a Changshu native and was one of Confucius’s students. Rumor has it that he passed away and was buried at Yushan of Changshu. Yanzi was later honored as “the Scholar of the South”. The memorial temple was listed as a cultural and historical relics unit under provincial-level protection on March 25, 1982, and one under state-level protection in 2019.