C1652 Here It Comes!

Look at what looks like a lump of steel in your hand, Liu Xuan. Of course he knew what it was. This was the core of an array formation!

What was the core of an array formation? It was the same as the CPU of a computer. It was the brain of an array formation!

The core of the array controlled the dragon fountain phenomenon in the sky. As for how it became the dragon fountain phenomenon