Good good study, day day up. I don't know whether you can figure out the mean of "good good study, day day up" if you are a non-Chinese native speaker. "Good good study, day day up" is totally a typical Chinglish, which means " study well and make progress everyday." Actually we speak English with Chinglish, but we didn't realize that is Chiglish sometimes. Honestly speaking, many people speak or think about non-native language with their native thinking when they learn a foreign language. Sometimes, it is hard to understand what they say for a native speaker, but they are able to make themself understood by their fellows who share the same native tongue, the same background. I used to read one article about how to learn a foreign language. Assuming you are learning American English right now. An awesome exercise is to practice speaking your native language with an American accent. If you can sound like an American speaking your native tougue. Imagine how easy it would be to speak English with an American accent. There is another Chinglish, "long time no see." I believe you must know what it means. The language have absorbed new words or new things from other cultures, with the development of the society. P.S. Another two Chinglish, you can guess what exactly they mean? 1. you try try see. 2. American Chinese not enough.