in this program model, we use blue, green and yellow to represent three levels (as for public, semi-private and private). Each block stands for a space with different surface the different material showing different programs. The same surface will touch each other. And the operation is still the plastic material with two levels, which means it controls the whole center space. Therefore, the mean circulation goes to lobby, community room, exercise, extra lobby (serves for the different open time of library and gallery and summer camp), summer camp, library and gallery, classroom and back to lobby. We make the library and gallery with the shape of stairs and slope means that it is the connection between public and private. And we want to use the stairs to be the garden, which is the similar shape of the traditional Southeast Asian garden. And the front of it stretching out to the same line of the neighbor building makes the CESA more attractive.