Shannchyuan opened the medicated oil bottle. In order to pour exactly on the side of the hollow, the position of the bottle should be as close to the floor as possible. Therefore, he had to adjust his body in a prone position so that he could pour the oil from a distance of only a few centimeters from the floor. Yihshyong and Shinnshiow immediately stepped aside to make room for Shannchyuan.
Like before, Yinqyueh was looking up from above. So that he wouldn't be dazzled by the flashlight, Shannchyuan forbade Yinqyueh to glare from the front. He told Yinqyueh to sit on his back so that the flashlight could be directly above Shannchyuan's head. From above Shannchyuan's head, the flashlight shone straight into the hollow.
Shannchyuan carefully poured the liquid. After that, he closed the bottle and placed it beside where he was kneeling. He had to start prying now before the box was dry again. It was still difficult, but he felt there was some progress. Slowly but surely, he managed to pry out the wooden box. Shannchyuan sat on the floor with a sigh of relief. Suddenly Shannchyuan remembered something. When he was in a prone position on the floor, he felt the coldness of the floor touching his chest and stomach.
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After thinking so, he immediately asked Yinqyueh's permission to use the medicated oil. The girl nodded. She was even willing to help Shannchyuan. However, Shannchyuan chose to apply the medicated oil himself.
Meanwhile, Yihshyong and Shinnshiow studied the small wooden box. They put the wooden box on the table. After Shannchyuan finished applying the wind oil to his stomach and chest, he immediately joined his two colleagues to observe the wooden box.
"It's a Wooden Box Puzzle." Shannchyuan took a deep breath. They get excited too soon. It turned out that their struggle was not over. It took a further effort to open the wooden box.
Yinqyueh also observed the wooden box. "May I try to open it?"
"Of course." Shannchyuan smiled. He handed the box to Yinqyueh, who observed it at once.
"This box is very nice," Yinqyueh said. "There are hardly any gaps between the sides of this box. If we weren't careful, we'd think this box came from a log carved into a box. The joints between the sides are very smooth."
Yinqyueh's face was grave as she checked the box. Shannchyuan was really in awe of Yinqyueh. That girl really wasn't an ordinary girl.
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Yinqyueh frowned. The girl groped each side of the box. She tried to push each side of the surface of the box. Shannchyuan knew that it usually took a few steps to open a box like that. Her slender fingers traced the box's surface carefully as if to persuade the box to slide one side promptly so that the box could be opened.
"Wow!" Yinqyueh cheered. She began to push down one side of the box. In Shannchyuan's view, Yinqyueh's way of opening the box was very similar to the movements to solve a Rubik's cube puzzle. Shannchyuan guessed the girl would not take long to complete the Rubik's cube. Yinqyueh shifted the top side of the box to the side. The upper side surface was indeed slightly exposed. Yinqyueh's fingers moved to the bottom of the box. She pressed the underside up or, rather, pushed into the box. Because it was pressed towards the top, the top side was pushed up. At that time, the top surface of the box really looked like a small coffin lid. After that, Yinqyueh only had to slide the lid to the right. The lid slid to the right until it was completely removed from the box. Inside the box, there was a small compartment that could become a place for storing small items. Yinqyueh smiled. Cheerfully, she then put her finger in the box. Yinqyueh took out a key from inside the box. She quickly gave it to Shannchyuan.
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They all then walked towards the door on the west wall. Shannchyuan didn't know if the key he was holding was really the key to the west door. But he had to try. Shannchyuan put the key into the hole in the door that had no handle. Shannchyuan tried to turn the key, and it worked. Even though it's a bit dragging, the lock rotates. After the sound "click," the key stuck. Shannchyuan couldn't turn the key any further.
The iron door was without a handle, so they couldn't open it right away. Shannchyuan, Yihshyong, and Shinnshiow simultaneously pushed the door with all their might. The door leaf moved inward. The door opened little by little. Until they finally managed to open the door completely.
The door on the east side had indeed opened. Behind the door, there was no other room. There was only one dark alley. Yinqyueh was standing right behind Shannchyuan. Instantly, Shannchyuan could feel Yinqyueh's body pressed against his back.
"Are you afraid?" Shannchyuan said the question without looking back.
"Absolutely not." The girl's voice sounded so steady.