In the early morning of the fifteenth day, the wind on the platform began to change direction. When it turned from the northeast to due north, Lin Chen stood on the east edge and felt that the wind was changing at a gentle amplitude, as if it was gradually changing direction. He adjusted the rhythm of his breathing, and did not deliberately follow the change in the direction of the wind, but just let his body naturally turn with it.
As he walked along the narrow path towards the stone door, he noticed that the moss on the walls on both sides was darker than yesterday, as if it had absorbed more moisture at night. The light inside the stone door was still stable and appeared brighter than the outside environment in the morning. He opened the door and entered sideways, and the airflow in the room was moving at a more even speed than yesterday. He was in the air Standing in the middle of the room, he felt that the air was flowing along the same path as yesterday, with no obvious deviation. He walked around the wall and found that the positions of the lines on the wall remained the same as yesterday. The dense lines on the left wall continued to part of the back wall at the corner, forming a more complete ring structure.
He walked to the center of the room and felt that the air flow was slowly touching the surface of his body and then split into two streams, flowing along both sides of his body. He stood there and felt that the air flow in his body was adjusting its direction synchronously, keeping in line with his breathing rhythm. About half an hour later, he turned and walked towards the door. There was still light on the edge of the stone door, and the door gap seemed wider than before. When he pushed open the stone door and walked out sideways, the light shone on his face, which was stronger than the light he felt indoors, making him squint his eyes.
Mr. Popo stood about three steps away from the door. "You came out a little earlier today than yesterday. Is there any change inside?"
"The path of the airflow has not changed, but the range of the lines on the wall has expanded." Lin Chen said.
Mr. Popo nodded. "Those lines will expand with the change of air flow. They are not painted on, but the traces that were originally there. The longer you stay, the more you can see. You don't have to go to the stone chamber in the afternoon. Master Son Gohan wants to see you."
After lunch, Lin Chen walked towards the main building. Son Gohan was sitting on the steps outside the threshold. There was a black stone similar to the one given by Fortuneteller Baba in front of him, but the shape was more irregular and there were obvious breaks on the edge. The surface seemed to be peeled off from a larger stone. He raised his head and glanced at Lin Chen: "This stone was picked up by someone on the edge of the desert before. It is made of the same material as the one Fortuneteller Baba gave you. Pick it up and take a look."
Lin Chen squatted down and picked up the irregular stone. The stone was lighter than he expected, and the surface was rough, as if it had been polished by gravel. He turned the stone over and looked at the cross section. The color of the cross section was darker and the texture was finer. He held the stone in his hand and felt a faint warmth coming from the cross section, which was similar to the heat of the stone flakes, like the remnants of the same thing.
[Ding! Same-origin items detected. Unknown item analysis progress: +3%. Current analysis progress: 55%.]
"When this stone was picked up on the edge of the desert, its position was consistent with the position pointed by the stone piece Fortuneteller Baba." Son Gohan said, "If the overlap between the two maps is accurate, then its discovery point may be further along that line."
Lin Chen put the stone down. "That stone piece should be used to confirm the direction. Its heat change may be related to the distance."
Son Gohan nodded. "Yes. Next time you enter the stone chamber, you can take it with you."
Lin Chen put the stone and the stone flakes together. When the two items were placed side by side on the table, the temperature of the stone flakes did not change significantly. The surface of the irregular stone was rough, and the cross section still maintained a weak warmth. He did not touch them again, but just confirmed their position and walked out of the room. The wind was blowing from the edge of the platform. When he passed by The edge of his cuffs blew. The slender light in the distance appeared on the skyline again, this time more clearly than before in the setting sun. He watched it disappear at the edge of the horizon. After the light completely disappeared, he turned and walked back to his residence. The two items on the table maintained the temperature before contact, and their surface temperatures did not change significantly when he entered the room.