Broad-based funds, that is, broad-based index funds, usually cover a wide range and are representative. Narrow index fund refers to the relevant index focusing on specific strategies, styles, industries and themes of investment. So it can be distinguished from the representative index.

The Hang Seng Science and Technology Index Fund tracks the Hang Seng Science and Technology Index, usually actively picking stocks, but mixed partial stock funds or stock funds that are not specific to specific industries, such as China-Europe Value Intelligence Selection and China-Europe Industry Growth, all have their own investment styles and stock selection criteria, but they are not limited to a certain industry, but choose stocks in the whole market. So it belongs to broad-based index.