It is the fund number. What we are talking about here is the A-share Shanghai Stock Exchange Index 3100 points.

The fund number can be directly entered as the name of the fund on the fund company's website or the financial section of the bank's website, and can generally be found on Baidu.

Funds can be divided into broad and narrow senses. In a broad sense, a fund refers to a certain amount of funds established for a certain purpose. It mainly includes trust investment funds, provident funds, insurance funds, retirement funds, and various foundation funds. What people usually call funds mainly refers to securities investment funds.