2.1 2.1 Reproduction 2 City X,M,L From Carry-On Slice to reflect our modern society C.O.S is a sheet component that throughout my research, design and test. Therefore, I observed a shape, a pentagon, which is often appeared around our environment. It can be seen from basic necessities of life, entertainment and so on. Everywhere has its traces. People can see the characters and influences of C.O.S., when it plays its strength and utility. However, COS, it is a component that can be a large number of replication, just reflects the using habits of money, goods and building materials, those features includes reproduction, consumption, re-use, recycling. And then, there are six new shapes that derived from C.O.S. they all have a feature of copy, and can be used as building materials. Finally, I classified the six containers by three kinds of scales, small, medium and large, and inserted those containers into Taipei city. I found some places where the most prosperous activities, highest spending power and complexity of population have. I want to reveal an unusual standpoint of consumerism to this place where is advocating extravagant and luxurious.