That's right, this was the ancient tomb of the Pavilion of Interpretation.

The totem in the tunnel was exactly the same as the one on the wall of the Hall of Interpretation and the tomb in Hundred Miles Town.

Feng Ning Yan gently caressed the frescoes with his fingertips, becoming even more confused. "What's going on …?" Hundred Miles Town is still around fifty kilometers away from the capital, could it be that the ancient tomb there is actually able to extend all the way to here? "

Shen Ling Jue looked at the familiar scene in front of him, using his nails to pick off a piece of paint, but shook his head and said: "No, the frescoes in Hundred Miles Town's ancient tomb are at least 300 years old, and the tunnels here, the degree of weathering of the stone materials is not more than 10 years old, and the pigments are also relatively new, it should be a few years earlier than the one in the Thousand Blessings Pavilion."

Luo Yunxuan was puzzled as she said, "That is to say, this tunnel is not the same as the tomb that Your Highness and Princess Hua-Yang went to? So how do you explain the same point in the frescoes? "

These murals were all hand-painted. Logically speaking, since the time and place were different, and the construction workers were different, it was impossible for the murals to be the same.

"There is only one explanation," Shen Ling Jue quickly walked forward, "That is the Mitsubishi pattern on the shoes of the White Peony. It's not a coincidence, but a sign."

In order to confirm this point, the three could only keep walking forward.

They were underground. After a few turns, it was already difficult for them to determine their direction. However, it was certain that this tunnel was much longer than the one in the Hundred Miles Town.

If it was heading north, it could have passed through the back mountain of King Yu's Mansion.

If it was headed south, then right now, they would be in the southwestern part of the imperial city, at the Skyline Temple.

There were no dangerous traps along the way, but there were still a few forks in the road to confuse the situation and some hidden traps.

Such a mysterious Thousand Blessings Pavilion, such a hidden underground palace, and such a long secret path, it made people both nervous and expectant.

After a while, two huge stone doors appeared at the end of the tunnel.

Luo Yunxuan spent her days in the Thousand Blessings Pavilion, but she had never walked so far today. She couldn't help but beat her legs and lean against the wall, feeling a little tired.

"Why is there another door … "When is it the end?"

Feng Ning Yan walked over and pointed the fire piston at the door as she exclaimed, "It's here! A door that requires both a pair of jade pendants and a golden key to open at the same time, it's definitely not a dark tunnel behind it! "

Between the two doors, there was a bronze disc. In the middle of the disc, there was a picture of a double swallow with eight small holes around it.

Shen Ling Jue told Feng Ning Yan and Luo Yun Xuan to back off a little, and he went forward to study the holes. Unconsciously, he raised his brows and asked, "There are actually eight keyholes?"

"What?" All eight holes are keyholes? "

Feng Ning Yan pointed the fire piston at him and narrowed her eyes to take a closer look. She also began to ponder.

"The method to activate the mechanism on the jade pendant should be the same as before. However, it is impossible to determine whether these eight keyholes are real or fake. If they are recklessly tested one by one, wouldn't it be very easy to trigger the mechanism? "

When Luo Yunxuan heard this, she hurriedly said, "Since we've already undone all of the mechanisms in the Ten Thousand Blessings Pavilion, there's plenty of time to study the method to open this stone door. There's no need to rush the Prince and Princess. "We've been down here for a long time. Let's go back …"

She was always worried about the safety of Shen Ling Jue and Feng Ning Yan, so she couldn't agree with their risks.

But when Shen Ling Jue and Feng Ning Yan faced this stone door, they felt like they were only one step away from the truth. How could they easily turn back?

Shen Ling despaired as he looked at the door. In a trance, he heard Imperial Concubine Min calling out to him.

"Jue'er, move forward. Mufei is waiting for you …"

He didn't feel the hairs on his body stand on end. Instead, his heart was abnormally calm.

"I'll definitely be able to unlock it." He took a step forward and pressed the jade pendant into the swallow shaped depression. He only heard a crisp "kacha" sound from the reed in the copper plate, indicating that he had unlocked a layer of the lock.

Feng Ning Yan couldn't help but nervously hold Shen Ling Jue's hand, "Don't worry, we have a lot of time to think about it."

Shen Ling Jue shook his head: "I've already made mufei wait thirteen years."

Feng Ning Yan was startled. She slightly let go of his hand and held the golden key. "Let me try."

"Yan'Er …" Shen Ling Jue held onto the key tightly, his expression was colder than ever before, "This is what I should do, step back."

"I won't retreat." Feng Ningyan insisted on standing together with him. "I'm by your side, you won't easily take the risk."

Shen Ling Jue's heart warmed, his brows slowly relaxed, as he took her in his arms.

Feng Ning Yan's face was pressed against his chest, and she looked at the few keyholes. Even now, she still couldn't understand why Imperial Concubine Min would want to build the Ten Thousand Buddha Pavilion.

"Your Highness, I have one thing I can't understand."

"What problem?" Shen Ling Jue also turned his head to look at the keyhole, while listening to Feng Ning Yan speak, he was still thinking of a way to open the door.

Feng Ning Yan replied, "Imperial Concubine Min has never taught you any kind of mechanical arts, much less passed down the Thousand Blessings Pavilion's" Mechanical Records "to you. She even hid the secret hidden in the Thousand Blessings Pavilion.

Luo Yunxuan nodded. "Yes, when Imperial Concubine Min taught me, she was in a secret room. Not only did she not let the emperor know, she even avoided His Highness."

"But if Imperial Concubine Min didn't intentionally allow His Highness to study mechanism skills, why would she leave behind a pair of scented pendants for him? That was the key to opening the underground palace. Isn't that a contradiction? "

Luo Yunxuan couldn't answer.

Shen Ling Jue knew that Feng Ning Yan was able to ask this question, so he must be deep in thought. He smiled at her and asked, "Do you have the answer in your heart?"

Feng Ningyan did not dare to say that she already had an answer. After all, those trivial thoughts in her heart were not enough to sustain the truth.

She tilted her head as she stared at the closed door, and muttered, "Imperial Concubine Min only has a son like His Highness, so she has no reason to hide the secret of the Ten Thousand Buddha Pavilion from His Highness. However, when she passed away, her highness was only nine years old, and her mind was still immature. It was very easy for her to be manipulated and used. At that time, if His Highness finds out that there are thousands of secrets hidden in the underground palace, how can a child accept it and control it? "

Shen Ling Jue was unwilling to accept this. His sword-like eyebrows twitched as he spoke in a low voice, "This King's talent was exceptional when he was young. How could he be an ordinary child when it came to both martial arts and martial arts?"

Feng Ningyan rolled her eyes and smiled. "But in Imperial Concubine Min's eyes, you're just a child."

"…" Shen Ling Jue had nothing to say, and could only shake his head, gesturing for her to continue.

Feng Ning Yan complacently shook her head, like a sour scholar who had written a good poem:

"That's why I feel that Imperial Concubine Min had no choice but to hand over the Double Swallow Jade Pendant to Senior Servant Xu when she encountered a desperate situation. She would only hand it over to you when you grew up, or perhaps when you unraveled the Ten Thousand Buddha Pavilion's mechanism."

"That makes a lot of sense!" When Luo Yunxuan heard Feng Ningyan's analysis, she suddenly felt enlightened and raised her thumbs in praise.

Shen Ling Jue couldn't help but nod his head, "Therefore, the question in your heart finally has an answer."

However, Feng Ningyan was extremely dejected. "No, not yet. I'm thinking, after we entered the underground palace, we didn't encounter any of the bloodless mechanisms in the Thousand Blessings Pavilion. This means that Imperial Concubine Min wants you to walk to this stone door and enter. So the reason she set up these eight keyholes was obviously to wait for you to unlock them. That is to say, only you know the meaning behind her actions. Think about it quickly. Is there anything between you two, mother and son, that has anything to do with the Eight? "