Traveling through time and space: Medical skills travel the world

"This place is really stunning." Liu Hua looked around, curiosity flashing in his eyes. He reached out and gently stroked a finely carved stone pillar, feeling the kneading of time with his fingertips, and could almost imagine the glory of the past.

Lin Yun walked to a dusty stone tablet and bent down to observe it carefully. The words on the tablet were blurred, but some ancient symbols could still be vaguely seen. "Look at this! There are some symbols I have never seen before!" She was so excited that she almost jumped up, pointing her finger at the details on the tablet.

"Can you interpret this?" Liu Hua said with a puzzled look on his face, stepping closer. "We need to find a way to understand this."

"Let me try..." Lin Yun squatted down seriously and carefully touched every groove on the stele with her fingers. "I have a book about ancient civilization at home. I remember similar symbols were mentioned in it." Her voice revealed a strong desire and determination.

"If you have confidence, then we can start from here." Liu Hua nodded, looking expectant. "We may find clues related to the ancient tomb!"

Lin Yun continued to scratch the inscription, and suddenly, her hand stopped, with a gleam in her eyes. "Liu Hua, come and see! There is a pattern here, like a guide, maybe a clue to the ancient tomb!" Her voice sounded particularly loud in the empty ruins.

Liu Hua walked quickly to her and stared at the pattern. "Indeed, the symbol of this tribe appears in many legends." He began to analyze, "and the shape of this pattern seems to point to somewhere in the north. We can start investigating in this direction!"

"Then we can't waste any more time!" Lin Yun said excitedly, with a flame in his eyes. "We must find that ancient tomb and uncover the secrets of my ancestors."

After leaving the stone tablet area, the two continued to move forward in the direction indicated by the pattern. The surroundings were full of dilapidated buildings and ruins covered with thorns. The old stone steps looked particularly vicissitudes in the sun. Their steps became faster and faster, and every time they looked at each other, their eyes were full of expectation and determination.

"There's a cave over there, let's go take a look." Lin Yun pointed to the vague darkness ahead, with a hint of nervousness in his voice.

"It's too dark, I'll get a flashlight." Liu Hua quickly took out a flashlight from his bag, and the light flickered in the dark passage. They walked into the cave carefully, and the humid air hit them in the face, making them feel a little chilly.

"I can feel that there must be some secret hidden here." Lin Yun said in a low voice, with a hint of nervous anticipation in his eyes.

"We have to be careful, there may be potential dangers inside the cave." Liu Hua reminded, shining the flashlight on the stone wall, reflecting cracks that seemed like it could collapse at any time.

As they explored deeper, they gradually discovered that the stone walls of the cave were inlaid with some strange totems of various shapes, showing the beliefs and worship of the ancient people. Lin Yun was overjoyed and couldn't help but move forward and gently touch the patterns with his fingers, "These patterns... they seem to be somewhat similar to the symbols I saw before."

"This may hint at some information about some ethnic groups." Liu Hua thought seriously, "If these clues can be combined with each other, perhaps they can lead us to a deeper level of the ancient tomb!"

"Let's go deeper." Lin Yun clenched the flashlight in his hand and nodded firmly, with a gleam in his eyes, as if he had foreseen the mystery that was about to be unveiled.

As they went deeper, the temperature in the cave kept dropping, making them shiver. Suddenly, they stopped in a wide space. The ceiling here was soaring into the sky, and strange light shone through the hidden gaps, making it look extremely mysterious.

"Look over here, there is a stone door!" Liu Hua pointed to the huge stone door in front of him. The door was engraved with intricate patterns and there was a groove in the center, as if waiting for some kind of power to open it.

"We may have to look for the key." Lin Yun thought and looked around. Suddenly he found a small wooden box on the side. He was shocked and walked quickly.

"This is..." Liu Hua followed closely and leaned over to look. He found that there were several ancient metal objects in the box. They were of various shapes and looked very much like the legendary keys.

"These must be the keys to open the stone door! We found it!" Lin Yun picked up one of them excitedly, his eyes shining with excitement.

"Feng Li, what are you busy with?" Li Ming's eyes fell on her notebook, and he became curious. He was a keen observer and could always catch the abnormality from the details.

"I'm organizing the clues I collected." Feng Li raised her head, a hint of excitement flashing in her eyes. "You know, there are many unsolved mysteries in the last investigation. I want to dig deeper."

"Which clues attracted you?" Li Ming took a step closer with great interest on his face, and leaned over to try to see the lines of text clearly.

"These are the key points I found." Feng Li pointed to a few lines in the notebook. "First, about the missing case, the black car mentioned by the witness. And the description of the witness, she mentioned a person in a white coat." She paused, thinking about the follow-up content, "Then there is the strange business card we found at the scene of the crime, with an unfamiliar phone number on it."

"I remember you mentioned that witness last time. Her statement made you a little suspicious." Li Ming frowned and pointed at Feng Li's notes. "Does her description conflict with the previous situation?"

"Yes, she seemed quite uneasy at the time, but she changed her story afterwards." Feng Li's voice was low, with a hint of inquiry in her eyes. "This makes me think there is something fishy going on."

Li Ming thought for a moment, then raised his head with a cunning gleam in his eyes: "We can go and ask her to see if she can provide more information. What do you think?"

"I do have this plan, but you know, when we went there before, she looked timid." Feng Li pondered, "Perhaps we can try a more subtle way to approach her."

"What are you thinking about?" Li Ming's curiosity was ignited and his face was full of anticipation.

"We can pretend to be her friend, care about her and see her attitude." Feng Li suddenly thought of an idea and smiled. "Maybe this will help her relax her guard."

"Good idea! But we have to be careful. If she finds out our identities, the consequences will be disastrous." Li Ming nodded seriously, then smiled, "Also, we should try to call the number on that business card."

"Yes! Maybe this is a key clue." Feng Li slapped her thigh and immediately wrote down the plan.

"Then I will help you contact the witness tonight, and you decide when to go find her." Li Ming's eyes were firm, "As long as we can solve this mystery, I am willing to go with you."

"Then I'll try calling." Feng Li found a sticky note, quickly wrote down the number, and dialed it. There was a rapid dial tone on the other end of the phone, as if every tone was urging her.

"Hello, how are you?" Finally, a woman's voice came from the phone, and Feng Li couldn't help holding her breath.

"Hello, I want to ask you about what I saw at the crime scene last time." Feng Li tried to keep her tone calm and sound easy-going.

"I'm sorry, I don't want to talk about that anymore." The woman's voice on the other end of the phone immediately became cold, like a solid line of defense.

Feng Li felt a sense of loss and her heart tightened: "I just want to understand what you saw. It is very important to us."

"I really don't have anything to say!" The woman raised her voice, as if she was afraid of revealing any secrets, and then hung up the phone.

Feng Li was stunned, then turned to Li Ming, anxiety welling up in her heart: "It seems she really doesn't want to say it."

Li Ming patted Feng Li on the shoulder and said in a gentle tone: "Don't worry, this just shows her fear of that incident, which means there are more tricks behind it. We should persist."