Emperor Zhezong of China (died 1100)

Emperor Zhezong of Song, personal name Zhao Xu, was the seventh emperor of the Song dynasty of China. His original personal name was Zhao Yong but he changed it to "Zhao Xu" after his coronation. He reigned from 1085 until his death in 1100, and was succeeded by his younger half-brother, Emperor Huizong, because his son died prematurely.

January 4 is the fourth day of the year in the Gregorian calendar; 361 days remain until the end of the year.