Chapter 641: Chapter 625: The Mirror

The security house of test site No. 2 is a full 3.5 kilometers away. The construction crew built a service road for access, and Yang Zhongkai could see the snow piled up on both sides from his seat in the car.

"To ensure commuting is possible, we have a snowplow come every day to clear the snow, but soon we won't need to do this anymore.

Did you know, our first experimental satellite, Red Crow No. 1, had an integrated conversion efficiency of only 84%, meaning one-sixth of the energy was lost, and even with several tests afterward, we couldn't break through 86%."

Perhaps because he had spent too long in such a desolate place, Ding Biyun was quite talkative at the moment: