China is on this side of the earth, and Brazil is on the other side (called antipodal point in geography). In other words, China and Brazil are too far away to have direct flights. Air transportation from China to Brazil mostly passes through the United States, such as Los Angeles, Chicago, new york, Atlanta and Miami. Time limit is not very good. If it is fast, it will arrive in three or four days, if it is slow, it will arrive in more than a week, and there are often many transfers.
Because it's too far away, the price is not cheap, about 30 yuan/Jin. The airlines that can be contacted are mainly American and Canadian airlines such as DL\AA\CO\AC, some South American airlines such as Japan Airlines and Chile Airlines.