First Trial...
Once Aaron decided to enter the room, he entered without wasting any time. The time in the ruins was already limited. It was already dark, and by the evening of the next day, he had to return to the exit portal in the outer region.
So, he needed to pass these trials before that time or else he would be in trouble.
When he entered through the door, he was blinded for a second. When he could see clearly again, he was standing in a grassland. Everywhere he looked, there was grass.
The wind was blowing gently, making the grass flow in waves. The scene looked like a peaceful and serene place where one would like to live after retirement, forgetting about the worries in life.
This was what Aaron felt when he saw the view, but he knew that in this world, the more peaceful a place looks, the more dangerous it would be.