Xiao Yi was a Shang Dynasty

Shang Dynasty

The Shang Dynasty or Yin Dynasty was, according to traditional sources, the second Chinese dynasty, after the Xia. They ruled in the northeastern regions of the area known as "China proper" in the Yellow River valley...

 King of China.

In the Records of the Grand Historian

Records of the Grand Historian

The Records of the Grand Historian, also known in English by the Chinese name Shiji , written from 109 BC to 91 BC, was the Magnum opus of Sima Qian, in which he recounted Chinese history from the time of the Yellow Emperor until his own time...

he was listed by Sima Qian

Sima Qian

Sima Qian was a Prefect of the Grand Scribes of the Han Dynasty. He is regarded as the father of Chinese historiography for his highly praised work, Records of the Grand Historian , a "Jizhuanti"-style general history of China, covering more than two thousand years from the Yellow Emperor to...

 as the twenty-first Shang king, succeeding his older brother Xiao Xin

Xiao Xin

Xiao Xin was a Shang Dynasty King of China.In the Records of the Grand Historian he was listed by Sima Qian as the twentieth Shang king, succeeding his older brother Pan Geng . He was enthroned in the year of Jiawu with Yin as his capital...

 (Chinese: 小辛). He was enthroned with Yin (Chinese: 殷) as his capital. In the sixth year of his reign he ordered his son Wu Ding

Wu Ding

Wu Ding was a Shang Dynasty King of China.His is the first historically verifiable name in the history of Chinese dynasties...

 (Chinese: 武丁) to live at He (Chinese: 河) and study at Ganpan (Chinese: 甘盘). He ruled for 10 years, was given the posthumous name Xiao Yi and was succeeded by his son.

Oracle script inscriptions on bones unearthed at Yinxu alternatively record that he was the twentieth Shang king.