Liu Bei and his remaining troops retreated to the Ma'an Hills (馬鞍山; east of present-day Changyang County, Hubei), where they continued to be fiercely assaulted by the Wu forces from all directions. At the same time, landslides occurred at the Ma'an Hills and caused the Shu forces to sustain thousands of casualties. The Wu general Sun Huan fought with his life and managed to break through enemy lines and capture the key positions in the hills. Liu Bei was forced to retreat through the hazardous mountainous terrain and barely escaped alive at night. During the retreat, he ordered his men to pile up their armour and set them on fire to create barriers for the pursuing Wu forces.