In addition, many people think that Kaiyuan Bao Tong is the title of the year, on the grounds that Li Longji, Emperor Xuanzong of the Tang Dynasty, had the title of the year, which is wrong. Kaiyuan Bao Tong is a non-annual currency, which was cast in the early years of the Tang Dynasty. This is written by Ou Yangxun himself. Ou Yangxun was a figure in the early Tang Dynasty, while Li Longji was born in the prosperous Tang Dynasty. Their lives are more than a hundred years apart. Chronologically, it is impossible for Ou Yangxun to record Li Longji's coins. It is a coincidence that Li Longji named Kaiyuan.