UT's triangle leg lock is to hold the other person's throat with his leg, and UT clamps other people's hands in the gap of his triangle, resulting in blood circulation. Blood should have entered the brain through the throat, but because the throat is squeezed back and forth, the blood stays here and can't get up for a long time, so the blood will be ejected from the mouth like a fountain, that is, the players we saw in the competition will vomit blood. However, this trick is to let the opponent give up for a period of time in the game, and generally there will be no serious consequences. Of course, the bigger the person, the greater the damage. However, although big shots are injured, they are often big shots with great strength. If the arm is strong, this trick can be broken! Now the best proof is 8D.