Reverse-Engineering the Solution

Zhao Han looked straight at the opposite door: the Li Gate.

Kan was due north and Li due south. Zhao Han strode quickly into the Li Gate.

As he entered the black hole that was the Li Gate, his vision went dark, then brightened again. He found himself in another room.

It was exactly like the previous room.

In that split second, Zhao Han had the distinct feeling that he had lost something precious.

But strangely, the door directly opposite him was also the Li Gate.

He looked behind him. What the hell? Why was it still the Kan Gate?

Hadn't he entered through the Li Gate? Why had he come out through the Kan Gate again?

Zhao Han couldn't make head or tail of it. He stood there, stunned, his mind racing as he searched for a way to crack the puzzle.

This game wasn't fun at all.

After that, without any further instructions, Zhao Han tried entering and exiting the various gates at random.

Without exception, he always came out through the Kan Gate.

Only after entering through the Kun Gate did he find the Kun Gate behind him and the Gen Gate directly opposite—not the Kan Gate.

But after that, Zhao Han had no idea what to do.

And then he discovered a terrifying fact: every time he entered the wrong gate, even if it was only for a split second,

he felt as though he'd lost something very important.

The feeling he got from entering the Li Gate and the other six gates was completely different from the feeling he got when entering the Kun Gate.

"Lifespan. It has to be lifespan. The biggest threat on the Ancient Battlefield is losing lifespan. Every time I enter a gate, unless I enter the Kun Gate, going through