Once upon a time, there was a beautiful woman named Dayang Sumbi. She lived in the mountains with her dog, Tumang. One day, she asked her son, Sangkuriang, to hunt for food. While hunting, Sangkuriang accidentally killed Tumang. Dayang Sumbi became very angry and hit him on the head, causing him to run away.
Years later, Sangkuriang returned, not recognizing his mother, and fell in love with her. He wanted to marry her, but Dayang Sumbi realized who he was. To stop the marriage, she asked him to build a boat overnight. Sangkuriang tried but failed. Angry, he kicked the unfinished boat, which turned into a mountain. This mountain is known as Tangkuban Perahu.
What is the main purpose of the legend of Tangkuban Perahu?