Where can I find the historical data of Shanghai Composite Index in recent years? What is the highest value of the Shanghai Composite Index in that month, and what is the stock yield? Writing a paper

Where can I find the historical data of Shanghai Composite Index in recent years? What is the highest value of the Shanghai Composite Index in that month, and what is the stock yield? Writing a paper needs data, please! You can go to the stock valuation network (www.zhoulupeng.cn) to look for it. It seems that that website has relatively comprehensive historical financial data such as Shanghai Stock Exchange Index, Shenzhen Stock Exchange Index, Standard & Poor's 500 Index, Hang Seng Index, etc., and it can also do chart analysis and compare with similar companies.

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