There are many classic textbooks on economics. Samuelson, Man Kun, Stiglitz and Dick can do it. It consists of microeconomics and macroeconomics.
English photocopies and Chinese translations of the above-mentioned textbooks are available in China, as well as Renmin University Press and Tsinghua University Press. It is also easy to buy. There are both Dangdang and Zhuoyue, as well as the big Xinhua Bookstore, or you can definitely find them in bookstores around the university.
In addition, the above textbooks are generally used by graduate students. The textbooks of marketing and economics used in domestic universities are generally adapted from the books of these masters, with little difference in theoretical system, but the quality of the textbooks is uneven.