A welcome rug, made of fine iron sand powder, is placed in front of the necessary stairs that connect the two spaces. The size falls on a size that seems to be able to cross, but is not so easy to cross. The viewer inadvertently stepping on, it is deformed, broken, and even blurred. The means of “Welcome”, on the one hand, the audience invites them with open arms, and on the other hand, they record those who inadvertently trample and pass by.