Which Chinese dynasty ruled for the longest time?

According to Chinaeducenter.com, “The Zhou Dynasty was the longest ruling Chinese dynasty. It lasted from 1122BCE-255 BCE”. It was started by the Ji family and had its capital at Hao (near the present-day city of Xian).

However, while the actual date for the start of the Zhou Dynasty has traditionally been thought to be 1122BCE, it has been revised as more archaeological evidence has been uncovered. Scholars now believe the start of the dynasty was 1046 BCE. “The Zhou is considered to be a time of artistic and intellectual advancement and awakening. Many of the Chinese culture's greatest thinkers in history existed during the Zhou Dynasty, including Confucius, Mozi, Mencius, and Laozi.”