Do you mean Shang Dynasty? Then why was the Shang Dynasty called the Yin Dynasty?

It refers to the Shang Dynasty!

The Tang dynasty was destroyed because it was sealed in the commercial land (now Bozhou, Anhui Province), with "Shang" as the country name. After his descendant Pan Geng moved to Yin (now northwest of Anyang, Henan), he was also called Yin or Yin Shang. Because the last capital of Shang Dynasty was in Yin, it was also called Yin Shang. Oracle Bone Inscriptions unearthed from Yin Ruins.

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