princess from the underworld

Chapter 621 text 631
Axuan listed all the problems we have encountered so far, "In our era, the use of lightning energy was already common, but the technical requirements were still very high, and the requirements for materials were the highest. We all used new The precious alloys developed, these are very popular in aerospace industry, coincidentally..." He smiled slyly, "I also have them here."

"You have this too?"

Axuan nodded, "Don't forget, this time and space journey is also considered as an aerospace ranks. The collection device we used is that kind of device, but I didn't think of lightning energy at the time. assimilated."

Not caring about Ah Xuan's emotion, Zi Yan deleted the collector item, and then focused on how to attract the thunder and lightning.

A Xuan shook his head, "We all depend on the situation. We usually use solar, wind and nuclear energy, and collect them only when it rains. The collected ones can be used for a long time. Few people will worry about this."

"No, no, I'm not worried about this. There will always be thunder and lightning. As far as I know, if there is a thunderstorm tonight, there may be another bigger one within ten days and a half."

"how do you know?"

"Hey, kid, don't tell me you're still young? This is called experience. It's been many years. Didn't you pay attention when you came here?"

A Xuan shook his head honestly.

Ziyan didn't catch him and almost scolded him, pinching the pen and said: "In 1752, the American scientist Franklin put the kite with the key on the metal wire into the clouds, and the metal wire wet by the rain led the lightning in the sky to Between the finger and the key, I think we can follow suit to guide the lightning down and guide it into the collector."

"Well, according to the current situation, this method can be said to be the most feasible, and we can still..."

After a sleepless night, I discussed with A Xuan until there were spots of light in the sky, Zi Yan put down the pen, rubbed her temples, yawned a lot, glanced at the sleeping A Xuan and the paper full of data on the table, She pulled out the one to be prepared, and threw all the rest of the calculation drafts into the stove. Looking at the rekindled stove, Zi Yan's heart felt like the yellowed rice paper rolled up, and she suddenly felt uncomfortable.

You have clearly made up your mind to leave, so what are you still afraid of?A year is almost over.

Suddenly feeling movement outside the door, Zi Yan swept the things away, turned over and was put on the beam.

(End of this chapter)