The corner building above the Forbidden City was built in 18 years (1420) and rebuilt. The Cape is part of the Forbidden City Pool, which is part of the palace's defence facilities with the city's walls, gates and moats. The Cape is an attic building on the corner and an important facility for wall defence works. The outer walls of the Angry Building, like the enemy building, are bulging outside the walls of the city, with its eyes open and a clear view of the enemy. In times of war, soldiers stationed in the corner can not only fire arrows from the front, but can also cooperate with the enemy building on both sides and with the military crossfire on the wall. The Jaki JK2317 Autumn Cape House was launched in 2022 as an innovative and variable Creator series set containing 338 parts。