Welcome to my Youtube channel! My channel contains videos that record interesting discoveries from my work, smart tips for daily life and documentation about improvements around my house. Topics of my videos might be scattered, but all are centered around one idea, that is to make high quality life out of low cost material. I'm endeavoring not only to save money, but more importantly, to save the environment. You are also welcome to check out my blog, yu.xueming.org, which talks in more details about many DIY projects in electrical engineering, mechanical engineering, software engineering as well as home improvement.