China HowNet is an academic resource website used by universities. Papers, periodicals and foreign literature can be found here. You need to recharge to download. After all, you need to quote other people's knowledge reserves. You can directly search for the desired papers/periodicals in official website, or you can enter search keywords to find what you need. Foreign language documents are hard to find.

2. China Data Network

China Data Network is to enter official website and "People's Republic of China (PRC) National Bureau of Statistics" to find the data, and then you can click on the relevant data query in "Data Query", including annual, quarterly and monthly data, as well as census, international and departmental data and sub-index data query. For example, the annual data indicators include national economy, population, foreign economic relations and trade, energy, finance, price index, industry and agriculture, social services, fixed assets investment and real estate. , and you can search the data of the last 5 years, 10 years and 20 years.

3. China Periodical Database

It is full of periodicals from various publishing houses in China. You can buy genuine high-quality papers/periodicals, or download some free materials to see if you need them. I think the papers and periodicals of HowNet are enough.

4. Other websites

For another example, different majors can query different websites, and China Internet Network Information Center (CNNIC) can download the Statistical Report on Internet Development in China to find relevant data on Internet usage in China. "China City Finance Society" can download excellent papers/journal articles and research reports in recent economic, financial and medical fields. Both websites can be downloaded for free.