This day, 31 July, 1989, the iron oxen of the Tang Dynasty were unearthed in Yongji County of Shanxi Province. Cast in 725 BCE to stabilise the Pujin floating bridge and connect Sha’anxi with Shanxi, at the end of the Yuan Dynasty the bridge was destroyed, the Yellow River changed its channel and the iron oxen were gradually buried by the sands of the River.
1989年7月31日的这一天，唐朝的铁牛在山西省永济县出土。 公元前725年，为了稳定普金浮桥，连接沙安西和山西，在元朝末期，这座桥被摧毁，黄河改变了通道，铁牛逐渐被河沙埋没。
