I'm Xinyu Chen, a new graduate student here. I like logic and rule-processing so I think maybe these things are about artificial intelligence. Alife is a interesting area because 'life' is so abundant and everything seems to be 'alive'. No matter what it is, a particle, a molecule, a people or a society, etc. Even some non-material phenomena are like living things: a language, a custom, a trend of fashion, a religion…. Let's try to understand some of them and find out their U-curves.