This depends on the depth and length of the cut. If the wound is short and not deep, and generally less blood is seeping, you can apply Yunnan Baiyao locally, then cover with clean gauze or paper, and go to the hospital in time for a change of medication and other treatment. If the wound is deeper and bleeding more, thicker paper or gauze can be placed on the wound and then pressed and wrapped with a bandage with pressure, but not strangled too tightly to prevent necrosis due to lack of blood supply to the hand. If necessary, pressure can also be applied to the proximal vessels, such as the elbow vessels, to stop bleeding. In conclusion, after slitting the wrist, you need to go to the hospital surgery or emergency department for examination, debridement and suturing if necessary, as well as tetanus injection.