Yes, trading funds can be placed at trading time, and off-exchange funds can be placed for redemption at any time, but there is a problem of calculating the net value on the same day or the next day, and there is a problem of subscription fee or redemption fee with a loss of about 2%. The transaction cost of on-site trading funds is only 0.6%, and the net value exceeds the handling fee to be considered profitable. Therefore, it is best not to redeem the fund easily.