Kirin Exhaustion. Chicken blood vine is called unicorn exhaustion in tomb raider notes. Chicken-blood vine is the dried vine stem of the leguminous plant Mihuadou; it belongs to the warm medicine with sweet and bitter flavor; it belongs to the liver and kidney meridians. Traditional medicine believes that chicken blood vine has no toxic effects, and no information has been found to show that taking chicken blood vine in the prescribed dose will cause adverse reactions to the human body.