Xiao Xin 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 twentieth Shang king, succeeding his older brother Pan Geng

Pan Geng

Pán Gēng was a Shang Dynasty King of China. He is best known for having moved the capital of the Shang Dynasty to Yīn....

 (Chinese: 盤庚). He was enthroned in the year of Jiawu (Chinese: 甲午) with Yin (Chinese: 殷) as his capital. He ruled for 3 years, was given the posthumous name Xiao Xin and was succeeded by his younger brother Xiao Yi

Xiao Yi

Xiao Yi can refer to:* King Xiao Yi, a ruler of the Shang Dynasty* Xiao Yi, personal name of Emperor Yuan of Liang* Empress Xiaoyichun, an empress of the Qing Dynasty...

 (Chinese: 小乙).

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