Ordinary people can definitely invest in index funds, which can achieve the purpose of maintaining and increasing the value of assets. However, for high-level investors, if the amount of funds allows, they can completely expand the scope of stock selection. Taking high-quality China enterprises in Hong Kong stocks and A-shares, and even US stocks as the scope of stock selection, setting weights by value factors, setting the upper and lower limits of the proportion of industries and individual stocks, and rationally allocating assets will have higher returns.