On the 11th of April 1241, the battle of the Sea of Zion broke out. On that day, the Mongolian conquerors commanded the 60,000 troops, inducing the hundreds of thousands of Hungarian King Béla IV's troops to leave Pest. On the 11th of April 1241, the Mongolians first crossed the river to attack the front line of the Hungarian army, and the Mongolians attacked the Hungarian army from under the Sea of Zion to the back of the Hungarian army. The Hungarian army was severely wounded in the Mongolian siege, and the Mongolian army caused the Hungarian army to escape in a major riot. During the days of the chase, Hungary was destroyed by more than 70,000 people, and Béla IV escaped alone.