No need. Official website of South China Agricultural University shows that there are no math courses for Japanese majors, but the main courses are: basic Japanese, advanced Japanese, Japanese listening, spoken Japanese, Japanese writing, practical Japanese grammar, general situation of Japan, history of Japanese literature and appreciation of works, introduction to Japanese linguistics, selected reading of Japanese newspapers and periodicals, introduction to Japanese culture, interpretation, translation, business Japanese, tourism Japanese, international trade, marketing principles, second language, computer application, etc.