Large-cap stocks are also large-cap stocks, that is, stocks with strong financial strength and relatively strong equity. These stocks account for a large proportion of the total market value, such as China Petrochemical. , are large-cap stocks. The fluctuation of general large-cap stocks will affect the changes of the whole market. There are more than 1000 varieties with a total market value of over 10 billion in Shanghai and Shenzhen stock markets, and these stocks are valued by big funds. In the medium and long term, the opportunities are mainly in stocks with large market value.