The origin of bitter gourd?

A farmer lives alone in a hut. He is honest and upright. One day, he saved an injured puppy by the roadside. From then on, he was no longer lonely. He leads a dull but happy life. One morning, the farmer went to grow vegetables and saw a vine with golden flowers. The farmer carefully moved the vine to the hut and took good care of it. After a while, many melons were planted on the vine. The farmer tasted one, which was very sweet and happy. The landlord knew about it and went to the door to grab melons. Farmers won't let them pick them. The result was beaten by the servant brought by the landlord. The dog saw the injured farmer. The landlord threw the puppy out of the hut and smashed everything in it. The landlord limped away with his servants and took all the melons. The farmer was very sad and buried the puppy under the vine. Tears soaked the soil and a golden flower grew out. It is the puppy who wants to spend flowers with the farmer and the landlord takes the melon home. Melon is no longer sweet and bitter. Later, people named it "Melon"