昆明湖
Around 1271, after the Yuan dynasty established its capital in Khanbaliq (present-day Beijing), the engineer Guo Shoujing initiated a waterworks project to direct the water from Shenshan Spring () in Baifu Village (), Changping into the Western Lake (), which would later become Kunming Lake. Guo's aim was to create a water reservoir that would ensure a stable water supply for the palace.