The invention and development of energy requires time and the accumulation and innovation of various scientific knowledge.

Today, Daxia has established many scientific research projects.

There has indeed been a qualitative leap.

However, precisely because of this, Qin Yi needed more planetary coins and original power.

The subsequent scientific and technological knowledge requires millions of planet coins each.

Or the original power of more than a dozen low-level civilizations and the original power of a high-level civilization.

But Qin Yi certainly cannot use the original power of advanced civilization.

I had no choice but to rely on the support of the guild and use the original power of the warrior civilization to exchange for some scientific and technological knowledge.

As for the 10 million planet coins in his hand.

It is Qin Yi's trump card, and he will not exchange it easily unless it is absolutely necessary.

City Lord Shen's act of alerting the enemy also served as a wake-up call to Qin Yi.

Three days.

Qin Yi was rewarded with the original power of Yuanqi civilization.

It also reached the original power of the three warrior civilizations.

Enough to exchange for new technology.

For example, advanced physics and mathematics knowledge paved the way for the nuclear energy era.

Three days later.

Qin Yi, Ke Liang and others once again entered the Dead Star Sea.

The area located to the north of Checheng is adjacent to the barren mountains.

Of course, in the real world, it is a barren mountain, an abandoned place.

And in the Death Star Sea.

The coordinates here are the star field formed by large and small ownerless planets.

This time.

They came to an ownerless planet with a fighting civilization.

The diameter is not large either.

The planet level is 3.

There may be a Dou Wang extraordinary person.