I purchased this from the Korean information market. The slightly thick paper and the thread binding on the spine are nice. The size is about the same as a paperback book. The vinyl cover is also thick and sturdy, so I think it's good to take it anywhere. It's written in "English" and Korean, but it's in small circles, so it doesn't bother me. I think it can be used for Korean or Chinese. It's a bit expensive, but since I frequently check the words, I use it because I think a certain level of sturdy construction is good. The bookmark string is appreciated. You can hide the meaning of the words on the back of the cover. * Will be shipped via Smart Letter or Yu-Packet Post Mini * If you purchase multiple items (several books, different designs), please comment. We will ship for free. There are no noticeable stains or blemishes, but there are individual differences, so please refrain from purchasing if you are sensitive. Please purchase after agreeing to the above.