Freedom is like a piece of glass. It can be cheap but indispensable. It didn't appear early in China, no matter in terms of concept or substance. You never know how gorgeous it can be. When a glass is blown out, it can be shaped into different forms and colours. Its complexity and variety are like the variants of freedom. Even though we've been argued about the ultimate definition or forms of freedom, it's undeniable that it has been shaped into different forms in different areas or minds. It can be covered with dusts, broken, buried, but as long as you clean it, piece the broken pieces together and excavate it, it can still be shinny. It can be fragile because it will have a lots of creaks when it drops. It can also be endurable because it's hard to discompose. It can build up the most splendid window in cathedrals where many people worship, but it can be part of humble houses as well. It's traded from west to east, and continue to have vigor. It's glass. It's freedom.? ??