In 1436, Prince Zhu Zhanshan fled the damp, heavy air of Changsha, petitioning his imperial nephew for a drier home. He chose the southeastern corner of ancient Xiangyang, building a palace that eventually swallowed nearly a quarter of the city. For two centuries, seven generations of his lineage ruled from this forty-thousand-square-meter compound.

In 1641, the rebel leader Zhang Xianzhong captured the city and burned the palace to ash. Two years later, another rebel, Li Zicheng, declared himself emperor of the Great Shun dynasty among the ruins, naming the city his auxiliary capital before a second fire consumed his short-lived court.

Only one structure survived both infernos: the Green Shadow Wall. Standing twenty-six meters long and over seven meters high, this massive screen wall is a masterwork of stone. Sixty-two slabs of cool, dark-green chlorite schist form its body, framed by pale white marble. On its surface, Ming dynasty stonemasons carved ninety-nine dragons. They left behind thousands of precise chisel marks, capturing the beasts leaping through stone waves and clouds.

At the center of the wall, two giant dragons face each other. Between them lies an empty, hollow socket. This void once held a glowing fluorite pearl, thirty-six centimeters wide, rumored to shine like the moon at night. Local legend blames a clever woodcutter who used smoking firewood to blind the stone dragons before prying the treasure loose.

Over the centuries, the heavy wall began to sink into the soft earth, tilting at a dangerous four-degree angle. Between 2005 and 2010, modern engineers carefully leveled and stabilized the nine-hundred-ton structure. Today, visitors can run their fingers over the smooth green stone, feeling the resilience of an empire that burned to the ground.