After buying OTC funds, they can only be sold on the third trading day, and after buying OTC funds, they can only be sold on the second trading day. T+ 1 trading is implemented in the OTC market, and the shares can only be sold after confirmation on the second trading day. Moreover, OTC funds are not traded in real time and can only be traded on the third trading day.
T+ 1 transaction is implemented for the funds on the floor. If you buy a fund on a trading day, you can sell it on the second trading day, and the funds in the market are traded in real time.