Why is Wu Song called the tiger-fighting hero?

Wu Song went home to visit his brother and passed by Jingyanggang on the way. After drinking a lot of wine at the Gangxia Hotel, I staggered towards the Gangshang. Not much happened, but I saw a writing on a tree: "The large insect in Jingyanggang has recently injured people, but there are merchants passing through the hillock, so they should form a group to cross the hillock. Don't make any mistakes."

Wu Song thought it was the store's trick, so he ignored it and continued to move forward. When the sun was about to set, Wu Song came to a dilapidated temple and saw a government notice posted on the temple door. After Wu Song read it, he learned that there was a real tiger on the mountain. When he was about to go back to the hotel, he was afraid of the store's joke, so he continued to move forward.

Due to the effects of alcohol, I found a large bluestone and lay down on my back. Suddenly a big insect swooped up from the sky, Wu Song quickly dodged past, and then dodged again. The tiger was already weak, so Wu Song grabbed the tiger's skin and beat him. The tiger was out of breath, Wu Song was exhausted, and was laid off step by step. All this was discovered by Orion and reported to the government. From then on, Wu Song became famous and was known as the "Tiger Fighting Hero".