Records of the Grand Historian
In the "Records of the Grand Historian" he was listed by Sima Qian as the nineteenth Shang king, succeeding his older brother Yang Jia. Oracle script inscriptions on bones unearthed at Yinxu alternatively identify him as the eighteenth Shang king. He ruled for about 28 years according to both the "Bamboo Annals" and the "Records of the Grand Historian".