Each player takes a physical strength card, turns to the side corresponding to the upper limit of physical strength, and puts it next to the military commander card. The upper limit of physical strength is the sum of the number of intact yin and yang fish on two military commanders' cards. Two separate yin-yang fish can form a complete yin-yang fish. Note: When a character's two military commanders' cards are clearly placed for the first time, if the single Yin and Yang fish on his military commanders' cards does not form a physical value of 1, he can immediately touch a card. For example, a character consists of a military commander card with 1.5 physical strength and a military commander card with 2 physical strength, so the maximum physical strength of the character is 3. For the first time in the game, when two military commanders are clearly placed, they can immediately touch the cards.

Mathematically, it is (commander a's blood volume+lieutenant b's blood volume) /2 = x "if x is N.5, then take n"