In the first year of his reign, Marquess Jing attacked the Zheng state and took over Yongqiu (modern-day Qi County, Henan).
The next year, his army lost to Zheng at Fushu (today's Dengfeng, Henan).
In 403 BC, Marquess Jing, along with Marquess Wen of Wei and Marquess Lie of Zhao partitioned the powerful Jin state into the Han, Wei, and Zhao states, marking the beginning of the Warring States period of Chinese history and Han as an independent polity.
Marquess Jing then moved the capital of Han from Pingyang to Yangzhai.
In 400 BC, Yangzhai was subject to a siege by the Zheng army.