'Human and Machine Love Affairs'is the topic, I need to use the most simple material to make the user empathize. So I made an interactive installation with shadow effect. When the experiencer enter into the installation, they can see through the hole. At the same time, the experiencer’s activity is limited(just like machine).Then open the two lights, which be worn on arms. and the shadow of experiencer’s hand will be showed on the wall. „Machine“ own a fiction version body, the shadow can contact the lover in front, but can never touch the real body. Through the installation, I hope that the experiencer can feel the untouchable love between human ,and machine, and to consider the future and relationship between machine and human.