The Battle of the Giant Deer, which became famous during the Battle of Xiang Yu, was the scene of breaking the boat. Breaking a boat means breaking a rice cooker and sinking a ferry. It is a metaphor for not leaving a way out, having to win a battle, and making up one's mind to go all out.
Breaking the Buses and Sinking the Boat "is from Sima Qian's" Records of the Grand Historian: Basic Records of Xiang Yu "in the Western Han Dynasty:" Xiang Yu was known to have led troops across the river, but all the ships sank. He broke the cauldron and steamer, burned the houses, and held three days of food to show that his soldiers would surely die, and none of them would return their hearts