Full of blood means you don't have enough blood. It is a way to brush equipment. A more ingenious way is to kill the monster while Redjade is still in the team, so that the monster can kill Tu Su and then save him. Then, kill the monster to end the battle, and pay attention to filling it with gas, so that when Tu Su fights with his master, it is 1 point blood, and he has three chances to act. The less blood you use for the first time, the higher the success. Hidden weapons, lost 2000 blood, because the first time the master would rebound and the third time he ended the battle with a stunt, so Ziyin didn't have a chance to push, so he had to use hidden weapons.