Now that the end of the dissemination is defined, challenging it has become part of my research. Ladder here refers to the traditional ladder that is used to climb over obstacles. Before using it to challenge the end, I began to test its materiality. First of all, to achieve the purpose of climbing, the ladder needs to rely on something or has a stable foundation. In this device, I used heavy materials such as cement and hemp rope to attach to one side of the ladder, and I used a foam box to hold the other side of the ladder. I constructed this unstable climbing structure.