I graduated from Beijing Foreign Studies University and studied Portuguese. Our school's FLTRP sells Portuguese dictionaries, practical conversations, grammar books, and about 300 sentences you said in Portuguese. But in private, don't buy this book. Super bad. If you really want to learn Portuguese, you can come to Beiwai (remember, it must not be a second foreign language). Our school textbooks can be taken out. This is called portugues sem fronteira, which is a series of books. We usually use this as intensive reading material. Unfortunately, if the books in our school are really pirated, the original edition is only available in Portuguese-speaking areas such as Macao and Portugal. Generally speaking, books in Portugal and Macau are very expensive. For example, a casual dictionary can sell for hundreds of dollars. An ordinary book in Macau is probably 50 yuan. So if you are not too picky, you'd better entrust a friend from Beijing to our school and go directly to the Portuguese teaching and research section of the Spanish Department to buy books.