I blogged these stuffs since 2008, when I was 12. Everything before 2016 was written in Mandarin. Contents after that are more in English. You can change the language by clicking at the button at the left panel. I tried to translate featured articles to English, in abstract only, see Featured Articles Abstract .
There are two main categories in this blog, academic or geek. Also, stuff before 2016 are all academic. Academic articles are not published journals but just more like my thoughts, on all kind of stuffs.