The Su's monument gateway was built in 1880 for honoring the chasteness of Woo Kao Bu's wife Sue. It was located far away from downtown , and therefore was preserved more completely. Woo KaoBu ever contributed his effort to build the stone city wall of ChuChang city, was one of the celebrities at that time. Woo died young, and his wife kept herself as a widow after her husband left her. 
 
Similar with Yang's monument gateway structure, four pillars, three door in width and three levels in height, using the material granite and chindow stone. 
 
Compared with other monument gateways, Su's monument was the latest built, the general shape was the same , but higher in dimension.