Located on Yushan Island in the center of Huanjianhu Lake, it is named for its resemblance to jade. The red and slender Qixu Bridge connects Shangdao. The ancestral hall is dedicated to Chen Xingdao, a Vietnamese anti-Yuan hero. Next to the ancestral hall, giant tortoise specimens are displayed in Huanjianhu Lake, adding a touch of legend to the legend of "Huanjian".