Han Du looked at the Gong students who were filling out the forms in front of the long case, and more and more Gong students gathered around him, and he felt like he could catch all the students in the world.

After the old eunuch received the news, he ran all the way to Lao Zhu and whispered a few words.

"What did you say? Han Du can lift objects out of thin air and make fire with water? How is this possible?" After Lao Zhu heard about it, his first reaction was disbelief.

How can there be such a weird thing in the world? It's just hanging objects out of thin air. If Han Du used his intelligence to create a blind trick, Lao Zhu would not be surprised. But it is simply impossible to make fire with water. Who has been there since ancient times?

We all know that water and fire are incompatible. Water can extinguish fire, but who would think that water can start fire?

"It's absolutely true, Your Majesty. Countless people on the street have seen it with their own eyes." The old eunuch just patted his chest to ensure that every word he said was the truth.

After hearing this, Lao Zhu hesitated for a moment and said nothing more.

But the next day, Lao Zhu brought Zhu Biao to the academy in white clothes, saying he wanted to see how Han Du was doing in teaching during this period.

When Lao Zhu came to the academy, he saw Han Du working with a group of students outside the house on the principle of focusing light through a convex lens. Seeing Lao Zhu coming, Han Du was about to step forward to salute, but was stopped by Lao Zhu secretly waving his hand.

"Mr. Han, are you going to answer questions to a group of students today? I wonder if I can stay and listen?"

"Emperor~" As soon as Han Du said this, he was glared at by Lao Zhu.

Han Du immediately changed his mind and said: "Master Huang came all the way, so of course it's okay."

After Lao Zhu heard this, a satisfied smile suddenly appeared on his face, and he and other students gathered around Han Du, wanting to hear his explanation.

Seeing this, Han Du stretched out his hand, letting the sun shine on the back of his hand, and continued: "The sun's rays have heat, but they are too dispersed on weekdays, so we will only feel the heat, but not the ignition."

Feel."
Chapter completed!