Fund, in English, refers to a certain amount of funds set up for a certain purpose. It mainly includes trust and investment funds, provident funds, insurance funds, retirement funds and funds of various foundations. From the accounting point of view, capital is a narrow concept, which refers to funds with specific purposes and uses. The fund we are talking about mainly refers to the securities investment fund. General funds mainly invest in large-cap blue-chip stocks, and when calculating the Shanghai Composite Index, large-cap blue-chip stocks also account for a great weight, so the decline and rise of funds are generally related to the decline and rise of the Shanghai Composite Index.