Chumo looks at Cheng Yaojin with an aggrieved face. He was beaten by the dead father. Now he has to be abused. It's hard, but he doesn't dare to refute. After all, it's about the Cheng family's face. He has to nod with tears in his eyes and turn around to explore Fengzi's mouth.

Unfortunately, heaven failed. Zhang Feng was talking with Li Shimin, Li Yuan and others at this time. He had to stand aside and act as a servant.

"Feng Zi, I didn't have a good time last time. When will I have another drink?"

Li Shimin looked at Zhang Feng with a smile. Last time when they were in the Academy, they were drinking, and Yu Shinan's old men rushed in, which made him uncomfortable. Finally, the party broke up unhappily, so until now, he still remembered how to drink.

Zhang Feng naturally knew what Li Shimin thought. After all, the last thing was related to him. His mentor was for his own good, so there was no way to say. Now Lao Li asked and had to deal with it awkwardly: "you can drink whenever you want. I still have a lot of good wine there."

Before Li Shimin answered, Li Yuan said excitedly, "it's better to hit the sun than choose a day. How about today?"

He usually stays in the deep palace. What he likes most is good wine and delicious food. Since he tasted Fengzi's wine, he felt that the good wine in the imperial palace is just like this. Now when he wants to drink, he is naturally happy.

But unexpectedly, his enthusiasm was immediately extinguished. Zhang Feng said with an embarrassed face: "there is wine, but now we are doing important things. The telescope will be done in a moment. It's not good to go now. Besides, the mentor is still in the Academy."

"That makes sense."

Li Shimin nodded in agreement. He was not afraid of Yu Shinan and others, but felt that the telescope in Fengzi's mouth was more important. Although he didn't make it now, he would rather believe it was true, because as long as it was true, it could be used in the army. In that case, Tang's national strength would be prosperous. Isn't it more important than drinking?

Although Li Yuan wanted to drink in his heart, they both said no and didn't say much. He had to spread his hands. Feel free.

But at this time, alchinnon came over with some molds: "Dean, things are ready. What should we do now?"

Zhang Feng took the rubber and resin and looked. He confirmed that there was no problem. Then he looked at altynon and said seriously, "the next step is to polish the lens. Now the lens is still ordinary resin. As long as it is polished accurately, it can play an effect."

With that, he got up and went to the edge of the furnace, raised the resin lens and baked it next to the fire. While baking, he said to altchinon, "bake off the oil on the surface first, so as to ensure smoothness and light transmittance."

Alchinnon nodded vaguely. In fact, he didn't understand these at all. He just felt that what the Dean did was right. He also wanted to pick up some wisdom behind the Dean, that's all.

About a quarter of an hour later, Zhang Feng took down the resin lens, put it in front of his eyes and smiled.

Seeing the dean's smile, alchinnon was also delighted and hurriedly asked, "Dean, is it effective?"

Zhang Feng handed the lens to alchinnon and said with a smile, "put it in front of you."

Altchinon took the lens in doubt and put it in front of his eyes. He felt that the things around him were a little bigger than usual, which startled him. He began to doubt whether there was a problem with his eyes, but he thought that there was no problem with his eyes. Is it this lens? With a confused mind, he put the lens in front of him again. Sure enough, as before, everything around him became bigger, and even the dean's head became a lot bigger.

With a surprised look on his face, he took down the lens and said in a trembling voice, "Dean, is this?"

He knew that this must be the dean's masterpiece, otherwise no one would do such a miracle.

They didn't know what riddles the two were playing, but they were attracted by alchinnon's puzzled look on his face. With the lens in his hand, they were confused. They looked at Zhang Feng together, hoping to see something.

But Zhang Feng just smiled faintly, as if it had nothing to do with him: "you don't have to look at me like this. It's just processed and will be more powerful in the future. Alchinnon, you go and get some fine brushes and prepare to polish."

Alchinnon nodded, handed the lens in his hand to Zhang Feng, turned and left.

The crowd was stunned. Qi Qi gathered around Zhang Feng and looked at the lens. They all wanted to know what was famous in it, so Li Shimin took the lead and said, "Fengzi, what happened just now? What's the power of your thing?"

"Yes, tell me."

Cheng Yaojin echoed. When he saw alchinnon's expression just now, he vaguely felt that something was wrong. Now he had to ask carefully.

"Want to know, see for yourself."