1. The 16125 fund cannot be purchased on the market. You need to purchase and redeem it off the market, or you can transfer it to the market for split trading.

2. Fund subscription refers to the behavior that investors open a fund account with a fund management company or a selected fund agency and apply for purchasing fund shares according to the prescribed procedures. The number of subscription fund shares is calculated on the basis of the net asset value of the fund shares on the subscription date, and the specific calculation method must meet the requirements of the relevant regulations of the regulatory authorities and be specified in the fund sales documents.

3. Redemption, also known as repurchase, is aimed at open-end funds. An investor directly or through an agency requests the fund management company to withdraw part or all of the investment from the fund, and remit the repurchase money to the investor's account. What people usually call funds mainly refers to securities investment funds.

4. Fund split, also known as split fund, refers to a way to change the corresponding relationship between the net fund share and the total fund share and recalculate the fund assets under the premise of keeping the total assets of fund investors unchanged. After the fund is split, the original investment portfolio remains unchanged, the fund manager remains unchanged, the fund share increases, and the net value of unit share decreases. The split of fund shares can reduce the net value of fund shares by directly adjusting the number of fund shares, without affecting the realized gains, unrealized gains and paid-in funds of the fund.