Frog in a Well is a wonderful group history blog with some wonderful authors. It has a Chinese section, a Japanese section and a Korean section. Even if you are usually interested in one area, it’s very worth looking into each one. They are mainly academics, dealing with academic issues, and they do it in a very open and accessible way.
For an example, I would suggest a look at an article by K. M. Lawson, on looking into the Chiang Kai-shek diaries.