Moli, thanks for your kind and wise words! A few thoughts:

>>Writing one diary each day makes no sense if you have nothing to write, right?
Perhaps, perhaps not.  I can't write much Chinese at all.  So what I write is very boring in Chinese. But by writing something, hopefully I will slowly improve.  Nevertheless, I like your suggestion!

>>My suggestion is to read others' diaries and make your own comments, which is surely a good method to enhance English learning.
That's perfect English. But I will try to improve on your perfection!  ". . . which is surely a good method to improve your English language skills." That says much the same thing. But like all language there are many right ways to say something!

I looked hard for an error in your blog and found none! But if others will look at each other's blogs and comment, both people will learn!