There are many excellent blogs on Sciencenet. However, only a few of them are in English, and even less are in both Chinese and English, namely, bilingual. If we can write our blogs in both Chinese and English, on one hand, we can combine writing blogs and learning English at the same time. On the other hand, since most blogs are shared with others, after getting feedbacks from others, we can improve our English quickly. For this, I have translated some of my previous blogs (see appendix at the end of this blog), Comments and suggestions are most welcome! Finally, I look forward to seeing more exciting Chinese-English bilingual blogs in Sciencenet soon!