depending on where u live they might have chinese book stores, where I live (Vancouver) they have a store called Beijing Bookstore
if you just want challenging math and science texts and you have no problem understanding english then I simply suggest you purchase college level math and science books
Right. The chinese bookstores around here carry only the most elementary mathematics texts in chinese.
I'm currently in a rather intense program to learn chinese-mandarin. I have next to no time to study anything outside my target language. The idea is to be able to study chinese and math simultaneously.
I'm a Chinese student and just wonder why you have interests in Chinese math and science texts.Do you just want to learn mandarin.Actually,I would like to read texts written in English rather than in Chinese.Many Chinese math and science books are not good,though there are some well-written.