The direction of economics I know, theoretical economics, mainly includes: political economics, western economics including micro and macro, world economics, population resources and environmental economics.
Applied economics mainly includes two disciplines: national economics, regional economics, finance (including taxation), finance, industrial economics, international economics, labor economics, statistics, quantitative economics and so on.
China Renmin University is the most ideal school to take an examination of economics, but it is very difficult to take an examination of economics this year, and they don't give reference materials, followed by Peking University Central University of Finance and Economics, Zhejiang University, Shanghai University of Finance and Economics, Xiamen University and Zhongnan University of Economics and Law, all of which are not bad. If the textbook is good, you have to choose according to the school you want to apply for, so I can't recommend it to you because you have to look at the teaching of the institution you apply for. The textbooks in each school are different. Different teachers will choose teaching materials according to their own ideas, even if they are the same, the focus will be different. Ordinary schools will hang the bibliography of specialized courses on the Internet. You can look at these schools online for yourself. ! !