There are many stories told by grandma to Wang Bao in The Secret of Treasure Gourd, including Zhang Si and Zhang San's trip.

Li Si is a person who likes hiking. Once, he wanted to see the East China Sea. So he packed his bags and headed for the East China Sea. He climbed thirty-three mountains and crossed thirty-three rivers, and finally came to the coast of the East China Sea. When he saw the magnificent East China Sea, he couldn't help admiring it.

Just when he wanted to recite a poem, suddenly a strong wind blew and he quickly closed his eyes. After a long time, the wind stopped. When he opened his eyes again, what he saw was no longer the surging waves, but a beautiful fairyland. He remembered that this was the legendary Dragon Palace.

At this time, he heard someone say, "Li Si, I miss your yearning for the East China Sea. I overcame all difficulties and obstacles to come to the East China Sea. I specially invited you to my Dragon Palace today. Qian Qian, the baby of the Dragon Palace, is absolutely beautiful. Please find something you like and take it home! " It is the Dragon King who is speaking. Li Si was flattered and followed Prime Minister Turtle to the place where the Dragon Palace was full of treasures. He doesn't pick gold or silver.

Suddenly, he saw a gourd. He thought, I'm going to put it in a bar. So he took the gourd and said goodbye to the Dragon King. Who knows this is a treasure gourd? Li Si can have whatever he wants. Of course, Li Si is not a greedy person. He won't be lazy to take a gourd. He still likes hiking.