"I heard Cen Xiang say this, it seems that it is true. In the past, hot air balloons were not allowed to be launched over Chang'an City. Today, so many hot air balloons suddenly appeared. I thought it was to ensure the stability of the situation in the city."

Li Ke looked up at the sky around him and found some hot air balloons.

Some of them have to be particularly high, and even crawled into the clouds and disappeared from their sight in an instant.

"Cen Xiang has good eyesight, and these hot air balloons are the helpers used by the Meteorological Research Institute to implement artificial rainfall."

Although Li Kuan is not afraid of anyone, it is better not to offend Cen Wenben, who is young and has a high position, to be able to avoid offend him.

"As long as the hot air balloon is lifted up, artificial rain can be achieved? Your Highness, King of Chu, you are not arranging a bunch of hot air balloons to let someone pour water down in the air? What is the meaning of this kind of 'rain' besides blinding His Majesty?"

Changsun Wuji was in a better and better mood. After hearing the conversation between Cen Wenben and Li Kuan, he couldn't help but lose another sentence.

"The same is carbonite, some people think that people who buy carbonite minerals are fools, and that thing is of no use at all. But the same thing can play completely different roles in the hands of different people.

This king lets the hot air balloons take off. In the eyes of some people, they think that the hot air balloons in the air, except for pouring some water down, cannot bring anything to today's rain prayers and artificial rain activities. This is just like the charcoal in the past, not because it does not have other workshops, but because some people don't know how to use it."

Li Kuan retorted around the bush, and also brought out the news that the Changsun family sold carbonite deposits at a low price to the King of Chu's Mansion to mock Changsun Wuji.

Sure enough, Changsun Wuji turned dark after hearing Li Kuan's words and no longer paid attention to Li Kuan.

In his opinion, Li Kuan is just a stubborn duck now. Wait for a while and after the rain prayer event is over, if it still doesn't rain heavily, let's see how he ends up.

"Second brother, this hot air balloon is in the air, is there anything else to pay attention to?"

Li Ke pretended that he had not heard the conversation between Li Kuan and Changsun Wuji, and continued to talk to Li Kuan at his own pace.

"There will be articles related to the principle of artificial rainfall in the next issue of Science Magazine. If you buy a book and read it carefully, you will naturally know why a bunch of hot air balloons have been launched today."

Li Kuan has no time and is not in the mood to give Li Ke a popular science event on such an occasion.

Anyway, the Journal of Science has confirmed that it will publish papers on artificial rainfall, so let his mother read the articles by herself.

"The wind has become stronger! The clouds seem to have become more and thicker!"

On the high platform, Li Zhi stood behind Li Shimin and felt the wind changing slowly.

"Don't finish it, continue to follow me and complete the process step by step!"
Chapter completed!