here's the proof:

The three little pigs delighted, danced around the yard, and began to sing. "Tra-la-la! Tra-la-la! That wicked black wolf will not come back ...!"

From that terrible day, the two sodas from the third little pig worked hard to buy a new house. They set up two houses made of bricks like the sodaranya. The wolf occasionally returns to explore their yards, but when he sees three chimneys, he recalls the incident when his tail was on fire. He was scared and finally left. And the three pigs live safe, and happy forever.