Copying fund refers to creatively satisfying investors' investment demand for existing excellent funds with successful operation but large scale and high net worth by copying the investment strategy, investment concept, risk preference and operation mode of funds with sustained excellent performance returns. By copying the fund, the scale of the old fund can be properly controlled, the normal operation of the old fund can be ensured, and the interests of the holders of the old fund shares can be avoided from being diluted by the entry of a large number of subscription funds. Based on the above advantages, fund replication has become very common in the world. For example: South Steady Growth No.2 Securities Investment Fund.