The wonderful story is that Pettitte helped the sacred tribe with his proficient mathematics. You should know that there is no light in the cave. In the dark cave, Petty and Mitchell can only watch the road with flashlights. Pettitte and Mitchell spent a lot of time on the road and encountered many difficulties. Pettitte thinks: Time is pressing, we must seize the time to attack, but we can't attack blindly. They first moved a thick hardwood table to a fixed point called D, and the width of the door was set to two points, A and B. They also pushed some couches to make a straight line L, and then found a tangent point of a circle tangent to the straight line L through the two points, and Pettitte and Mitchell kept this tangent point. Look, this battle! The white-haired old man put the table at point D, then hid behind the hardwood table and kept shooting snipers. Patty and Mitchell hid at point M behind the sofa. The stout manager kept shooting in the direction where the white-haired old man was hiding, because the table was thick and the bullet could not penetrate, so he could not hurt the white-haired old man. Later, when the white-haired old man shot, he also told the stout manager to surrender. The stout manager was completely angered and shot at the white-haired old man with a submachine gun. At the same time, Mitchell is waiting for his chance in M with a gun. When he saw that the chubby manager had just raised himself, Mitchell quickly pulled the trigger and knocked the chubby manager to the ground with a bang.