登高去梯

Explanation: After climbing the ladder to the height removed. That is no longer retreat. 　　Source: "Nine grandchildren to": "handsome with it on, such as climbing the ladder away." 　　Examples: Cover, such as ~, with which life and death, were cast mash taste, forget their hunger. ★ Roger Li Tang, "Chung Ji Ji, Suzhou, Jiaxing Mita order"