Hu Kehao returned to the farmhouse without attracting much attention from the boss. The boss only cares about whether you pay enough rent, as for how long you are going to stay, whether the door is open, whether there is anyone in the room, when to get up, when to go to bed, etc. In the past few days since Hu Kehao left the farmhouse, the owner of the farmhouse did not know.

Hu Kehao bought several large glasses, a pack of laundry detergent, a pack of salt, a few pairs of long chopsticks, and a few candles from a small shop nearby. After getting ready, Hu Kehao came to the Qinglong Pond again, and sent a signal as agreed, Jiaolong came to Tan's side, and Hu Kehao sat down. It was night, and it was pitch black, and no one saw him riding on the dragon, otherwise they would have been frightened. Under the protection of the snake clothes, Hu Kehao returned to the Water Palace safely. Jiaolong turned into a kind and amiable white uncle. Uncle Bai was familiar with the road and took Hu Kehao to the Water Palace and met King Tan.

"Who is this?" King Tan stared at Hu Kehao, his eyes revealing a majestic domineering spirit.

Hu Kehao saluted the king of Tan and replied politely: "I am a resident of the land, because of the great drought of the weather, the people have suffered, I have come to pay homage to the king, please understand the suffering of the people, and hurry up to help the people." ”

"Hahaha...... I want to evaporate the lake water, and then clean up the polluted silt and garbage in the pool, and return me a pool of clean water, which is also a benefit to the nearby towns and villages! Tan Wang said.

"Please stop burning the water quickly, once something happens, the water palace will cease to exist, and you will regret it!" Hu Kehao said.

"Young man, you are here to bewitch the public, I think you owe a beating!" Since King Tan ruled the Water Palace, most of what he has heard is flattery and slapping horses. The decisions he made must be resolutely implemented by the ministers, and no one dares to raise objections. Hu Kehao openly accused him of doing something inappropriate, and King Tan's dignity was violated.

"I'll do a few experiments for the king right away, and you'll know if I'm right." Hu Kehao said confidently. He didn't care about King Tan's face, he just wanted to stick to the truth.

Hu Kehao took out two glasses, added the same volume of water to them, and then added a certain amount of washing powder to them, and stirred them with chopsticks for the same time, and the same volume of foam was produced in the two glasses. He lit a candle and placed it under a glass to heat it up, and in a few moments the foam in the glass burst to a third the volume of the foam in the other glass.

"What do you mean by this trick?" King Tan asked.

Hu Kehao said mysteriously: "If you heat the glass, this bubble will be unstable and will burst!" He pointed to the blazing Dading and said, "The Dading outside is heating, and the temperature of the water in Qinglong Pond is still rising!" King Tan was thoughtful.

Hu Kehao took out two more glasses, added the same volume of water to them, and added table salt to one of the glasses. Then add the same amount of laundry detergent to both glasses, stirring with chopsticks for the same amount of time. It was seen that the volume of foam in salt water was much less than that in clear water.

"Oh king, there is more mineralization in this brine and less foam. Similarly, only water evaporates in Qinglong Pond, and the salt in the water does not evaporate. The more the pool water evaporates, the greater the salinity! Hu Kehao said.

"What does your bubble have to do with my water palace?" King Tan asked.

"King, you don't know the true face of Lushan, only because you are in this mountain', this water palace where you live is a bubble at the bottom of Qinglong Pond!" Hu Kehao said.

This news shocked King Tan. At first, people thought that the earth was flat, but then some people said that the earth was round, and people who learned of this fact were undoubtedly shocked. Similarly, the King of Tan also found it difficult to believe this fact, he had lived in the Water Palace for a long time, and sometimes he had drilled out of the surface of the Qinglong Pond to go out to inspect, but he never thought that he was living in a bubble. The water tribes under his rule can breathe and survive in the air of the water palace, and they can also swim in the water of the Qinglong Pond, and they have the ability to be amphibians. At the beginning, there was an inter-tribal war in Qinglongzhuang, and the victorious side sank hundreds of people from the defeated side into the pool, and they fell into the bubbles of the underwater world of Qinglongtan and established the Qinglongtan Water Palace. At that time, they could only live in bubbles, but later under the influence of fish genes, their bodies evolved, and they were able to swim and survive in the water of Qinglong Pond. In the world in which human beings live, we can see the three states of gas, liquid, and solidity of matter, such as mountains, water, and air, and we live in a world composed of these three states of matter, and we never think that we are in a bubble. Similarly, the water tribes of Qinglong Pond also perceive the existence of the three states of matter on a daily basis, but they never think that they are living in a large bubble.

King Tan has limited knowledge and cannot be sure whether what Hu Kehao said is true. He called the witch for advice, and the witch was also ignorant. She only knows some witchcraft, where does she know these scientific truths? Hu Kehao took the king of Tan to the cave where he found the bubble film, and asked him to touch the liquid film himself, comparing the difference between the two worlds inside and outside the liquid film, and at the same time showing him the difference between the inside and outside of the soap film. In the face of the facts, King Tan had to admit that the water palace where they lived was in a bubble. In the same way, if one day, human beings observe the boundaries of the universe in which we live, and find that there is another universe beyond the boundaries of the universe that is not exactly the same as the natural laws of our universe, will human beings believe that they are also living in a cosmic bubble?

Based on the fact that there are bubbles at the bottom of Qinglong Pond, King Tan has to consider the two experiments done by Hu Kehao. Outside the bubble is a liquid film formed by the alien water in which the electrons in the atoms change around the radius of the nucleus, and once the instability of the liquid film is caused by the distillation activity, then the end of the water palace world is coming. Under the persuasion of Hu Kehao and Uncle Bai, King Tan ordered to stop burning the ding, and all the relevant implementations were demolished. The relevant personnel were also sent to survey the water vapor and clouds in the air of the nearby towns and towns, and the conditions for rain were met, so an order was issued to implement the rain.

People in the nearby towns and villages were feeling the unbearable heat, when suddenly dark clouds rose in the sky, and bean-sized raindrops fell and dripped on the ground, crackling. The arid earth was moistened by the rain, and the smell of earth came to the face. The rainwater first flowed into the cracks, and the cracks slowly filled up with the rainwater and gradually closed. The rain hit the branches of the trees, pouring down curtains of water; The rain hits the plantain leaves, and the beads splash the jade; The withered seedlings soaked up the rain and raised their heads in high spirits. A few children screamed and ran back and forth in the rain, soaking wet and bathing.