Li Jiancheng was anxious.

"Ninth brother, you don't want to sell Guanzi."

Sima Jiu stared at the cliffs and waterfalls in front of him, made a solemn appearance, and said, "Passing through this Wang Qingtan and exploring under the waterfall, it will be clear." ”

"Cut, you still need to say this, everyone knows it, and you think you have a good way?" Nalan Lingyun looked disdainful.

Sima Jiu looked embarrassed, and then he asked the Kyushu shogunate for help.

"Group leader Sima Jiu: Fellow sages and bosses, the rivers and lakes are in emergency, help see how to find the entrance to the Water Moon Cave Mansion?"

"Mr. Wuliu Tao Yuanming: Group leader, why are you here again, we just had a good conversation, oh, yes, it happened to be on the eve of Jing Ke's righteous assassination of King Qin, but it's wonderful, do you want to listen to it."

"Group leader Sima Jiu: Listen to a fart, eight hundred miles is urgent, you guys hurry up and think of a way?"

"Sword Saint Pei Min: If you are busy, you will be chaotic, and if you are chaotic, you will panic, and those who are panicked will do nothing. Leader, you might as well calm down and take a closer look at the murals carved on the cliffs. ”

"Group leader Sima Jiu: Didn't you notice any difference?"

"Sword Saint Pei Min: Carefully, carefully, carefully, such an important word, you have to let me remind you three times."

"Group leader Sima Jiu: Oh? I know. ”

"Group leader Sima Jiu: Thank you Brother Pei for your advice."

"All news: Pei Min, a member of the group's sword saint, won the honorary title of 'Special Mentor' from the group master"

"Swordsman Jing Ke: I knew that I could get the honorary title, and it is my duty to be a hero."

......

"Who says I don't have a good way?"

Sima Jiu said angrily: "This handsome guy will give you a little guidance." ”

"Oh, little girl." Nalan Lingyun was unimpressed by Sima Jiu's words.

"Have you noticed the murals carved on the cliffs?"

"The mural is ordinary, it's not that different?"

Sima Jiu smiled, "Miss Lingyun, do you pay attention to people-oriented?" ”

"Well, that's right."

"If it's people-oriented, why do you want to carve a mural on such a grand scale? This can cost a lot of manpower, material and financial resources. ”

"Could it be that you mean that these murals are related to the Water Moon Cave Mansion?"

Nalan Lingyun suddenly realized.

"Well, the children can be taught."

Sima Jiu's eyes were slightly closed, making him look like a teacher.

At this moment, Li Jiancheng exclaimed, "Look. ”

"On the cliff, every small step, there is a protruding stone platform."

When everyone heard the sound, they looked in the direction of Li Jiancheng's finger.

I saw some inconspicuous stone platforms, which were extremely ingeniously integrated in the murals, and it was difficult to find them if you didn't look closely.

"These protruding stone platforms look like they form a 'human' character." Sima Ruohua stretched out his index finger and followed the direction of the stone platform, drawing the word 'human' in mid-air.

Sima Jiu speculated: "The stone platform stretches from the edge of the cliff to the back of the waterfall, and I think that the end of these protruding stone platforms is where the entrance to the Water Moon Cave Mansion is located. ”

"In that case, let's go."

"Good!"

Soon, everyone agreed.

Li Jiancheng made a concise arrangement: "I will lead the way in the front, Brother Feng Li will lead the way, Brother Feng will walk in the back, Brother Nine will walk in the middle, and Sister Ruohua and Miss Lingyun will be separated. ”

"Okay."

Soon after, the people came to the edge of the cliff and walked along the stone platform towards the middle of the cliff.

There are not many protruding parts of the stone platform, which can only accommodate the feet side by side.

"Brother, I'm afraid."

Sima Ruohua glanced at Qingtan under his feet from time to time, and his tone trembled.

"Don't worry, don't be afraid, with my brother behind, it's going to be fine."

Li Jiancheng also turned around and comforted: "Don't look at the cliff, just pay attention to stepping on the stone platform step by step." ”

"Hmm!"

The edge of the cliff is about 70 meters away from the waterfall, and everyone is cautious and moves forward step by step.

It was about half an hour before they came to the back of the waterfall.

As Sima Jiu expected, the entrance to the Water Moon Cave Mansion was hidden behind the waterfall.

At the entrance of the cave, there is a platform that is several steps longitudinal and horizontal, and standing on the platform, you can feel the alternating hot and cold air flowing out of the hole.

Li Jiancheng stood on the edge of the platform and looked up and down, but found no other caves.

So, he turned to look at the entrance of the cave and concluded, "This should be the Water Moon Cave Mansion!" ”

Sima Ruohua stretched his neck, looked into the cave, and sighed: "Huh! In other caves, there is a touch of blackness, but inside, there seems to be a bright light. ”

"That's good, it seems that the candle flame we brought with us should not be used."

Suddenly, Nalan Lingyun was happy.

Previously, not long after setting off from the medical village, Nalan Lingyun found that there were not many candles she carried, and along the way, she was still worried about it.

"Let's go, go in and see what's going on inside."

When Sima Jiu was about to walk into the cave, Li Jiancheng hurriedly grabbed him, "Boy, what do you want to do?" ”

"I'll take the lead!"

"Big brother is here, where is your turn to take the lead."

When Sima Jiu was about to refute, Li Jiancheng had already taken a step forward and walked towards the cave.

As he marched, he instructed the people behind him: "Let's march according to the formation just now, everyone pay attention to safety." ”

"Hmm!"

After entering the Water Moon Cave Mansion, Sima Jiu immediately understood the source of the bright light in the cave.

At the entrance of the cave, the stone wall is inlaid with a large number of crystal stones, and the deeper you go into the cave, the more crystal stones there are.

On the surface, it is the light emitted by the crystal stone that illuminates the cave.

In fact, it is to use the principle of light reflection to reflect the light outside the cave through the crystal stone into the cave.

The light reflected in the layers of crystal stones illuminates the cave exceptionally brightly.

Of course, the crystals themselves also emit a faint light, but they are nothing compared to the light reflected by the crystals.

Sima Jiu sighed to himself: "Using the principle of light reflection, natural light is introduced into the cave for lighting. From this point of view, the doctor is worthy of being one of the nine great scholars in the world. ”

"Oh, such a clean new energy, why didn't I think of it before?" Sima Jiu was immediately annoyed.

However, at this time, Sima Jiu's younger sister Sima Ruohua was in a different state.

"Wow! What a beautiful crystal stone. ”

"Later, I'll make sure to take a few pieces out."

Sima Ruohua touched here and there from time to time, and it was strange.

Nalan Lingyun was speechless for a while.

Take it out? That's okay, this is a thing from the Shuiyue Cave Mansion, this time I'm here to find medicine, not to rob.

"Ruohua, what's the matter, it's better not to take the crystal stone out."

"Why?"

"This ......" For a while, Nalan Lingyun didn't know how to explain to Sima Ruohua.

"Sister Ruohua, do you know what it means that the husband is innocent and guilty?" Li Jiancheng asked without replying.

"I'm not a literati, how do I know."

“......”

"What do you mean?"

"It seems that these crystals are more precious."

"And then?"

"The more precious things are, the less they can be displayed too much, so as not to attract thieves to covet them."

"Oh, that's what it means."

Sima Ruohua immediately understood what Li Jiancheng meant.

"Shall I bring a small piece then?"

"I'll have to ask the spirit ...... this."

Before Li Jiancheng could finish speaking, he suddenly realized that there was movement ahead.

So, he immediately steadied himself and waved his hand to signal everyone to keep quiet.

Then, he withdrew his hand on the hilt of his sword and took a defensive stance, keeping an eye ahead.