Our group walked alertly towards the depths of the mausoleum. It's winter, we're wearing a lot, and I'm starting to feel the temperature rising, and we don't feel the heat when we walk outside, maybe we're walking down at a very small angle, and the angle is so small that we don't even notice it.

After walking for a while, we still didn't find anything, and the hole should be very deep. Moreover, after walking for so long, its space has not become a little smaller, which is really very rare.

Regardless of the feng shui here, the Tang Dynasty was also the era of feng shui, when the emperor liked to open a mountain as a mausoleum, that is, to open a hole in the mountain to bury people in it, such a burial style would add great difficulty to tomb robbery. I think that the ovary chose such a place for the tomb of Gaozu, perhaps also out of this consideration, and the choice of natural caves requires far less manpower and material resources than "opening the mountain".

We walked quietly for a long time, and I finally saw the "end" of the road, which seemed to be blocked by a tall wall. From a distance, this seems to be a bit "popular", and it will reflect under the light of an oil lamp, and it looks like it should be some kind of metal.

"Everyone, be careful!" I turned back to them and said. It's time to be vigilant.

Suddenly, Xiao Shirong grabbed me, my mind was concentrated in other places, and I was startled by him like this: "What are you doing?"

"Don't go to the front." As he spoke, he glanced at the man next to him, and someone walked forward.

"You ......" I was about to ask him what you mean by this, but I thought that he might also be worried that I would lose my life if I took the first touch, so I swallowed the words back.

Although this is beneficial to me, I think about it, who was not born by my parents? My life is my life, and the lives of his men are not life? I took his hand away and said, "It's not a big problem, don't be so cowardly." Then walk back to the front of the line. It's impossible not to panic, but at least I have some experience, and I have a visual advantage.

In fact, it was not as dangerous as we thought, at least when we walked up to the wall, nothing happened. Take a closer look, here is a huge iron cast wall, how high the hole is, how high the wall is, although the surface is mostly rusted, but in the middle can vaguely identify a door more than one person high, there is a golden object in the middle of the door shining, just now it is the most reflective reflection, from its position, it should be the door lock, there are a lot of words written on it.

Xiao Shirong followed me up and took a look, but said with a smile: "Fuck, it's a lock."

"Why, do you know this thing?"

"There are a few pieces at home, but the styles are different, and this thing is not easy to break."

"Do you know what the principle is, if you have a principle, you can try it."

"To put it mildly, even if I tell you the principle, you may not be able to break it."

"Then tell me about it."

"Hehe, the Tianshi lock is a lock controlled by time, and only you can open the lock at the set time of it, just like the current combination lock. Its time is a certain year, a certain month, a certain day, and a certain time, according to the dry branch calendar, a total of eight digits, just like counting eight characters. The problem is that you don't know what the timing of it is, so the difficulty is like an eight-digit password. ”

Listening to him say this, I felt that this thing was a little difficult and abnormal, the numeric password 0-9 is only ten numbers, and the cadres and branches of the calendar, whether it is A, B, C, D, or Zi Chou Yinmao, are all twelve, even if they try one by one, it is more laborious than the password.

Well, now our path is blocked by it. Obviously, we either have to find a way to pick the lock, or we have to think of something else.

Xiao Shirong's mind was obviously straight, and he had already touched the junction between the wall and the cave next to him. I was silent to see what he was going to do, but after a moment he touched it, I ordered my men to take out their tools and begin to break the ground.

However, after a few digs, the shovel hit the iron with a "bang". Xiao Shirong tried several other places, without exception. It's good now, although there is only this wall on the surface, it turns out that the inside of the surrounding cave has also been filled with iron, and we are like spring rolls wrapped in iron.

I didn't expect that the technology of cast iron irrigation in the early Western Han Dynasty had reached such a level, and it should not be seen in other places. It seems that it is not so easy to break through here.

Xiao Shirong looked back at me, I looked at him, and then we looked at the "Heavenly Time Lock" almost at the same time.

The structure of this lock is not difficult to figure out, with eight grids grouped in pairs and arranged up and down, which should represent the year, month, day, and hour respectively. It looks like there's a rotatable structure inside, and it's like a combination lock.

I looked at it again, but I couldn't see the cylinder, and it seemed that there was no convenience for any crooked ways.

"Did your ancestor tell you when Gao Zu died?" I asked Xiao Shirong.

"No, what's wrong?"

"What's the matter, isn't the time set on this lock the most likely time to be the time of his death or the time of his burial?"

"Hmm...... There is some truth to it, so when did he die? ”

"Don't you know!"

"I don't know."

Forget it, it's better to ask for others than for yourself, I began to think about historical questions in my head, but how could we possibly think of such a specific time? And generally speaking, I only remember the founding time of the Han Dynasty, how can I care about what month and what day did Gaozu die?

"I'll tell you, I really regret that I didn't bring a copy of the history with me." I told Xiao Shirong.

After saying this, before Xiao Shirong could answer, someone stabbed me from behind. When I looked back, it was Xiao Shirong's subordinates, and a copy of "Historical Records" was handed to me.

I really want to laugh, who is going to reason with this?

"Why do you carry this thing with you?" I looked at him and asked with a smile.

"Do you want anything else, he's got it all." Xiao Shirong said.

I also stopped reasoning with him, and opened the book and began to look for Gaozu Benji.

"In April of the twelfth year, Gao Zu collapsed in Changle Palace. What year is twelve? ”

"The twelfth year of the Han Dynasty, 195 B.C." The "great historian" who had just handed me the book replied.

"Oh...... That's ...... "I began to calculate, and with my clumsy knowledge, I could only use 60 for addition, subtraction, multiplication and division."

"Bingwu year." Xiao Shirong's other subordinate said.

I...... Okay, all of you are talents, each with your own ability.

Okay, Bingwu year, April Jiachen...... "You help calculate, April Jiachen of the twelfth year." I said to the guy just now.

"Bingwu 癸巳甲辰." He replied.

"Well done!" In this way, we have six out of eight, and the last two are only 12 even if they are tested.

I couldn't wait to go up and turn the time lock, and put the six bits in front of it one by one. Gold is good, it has no effect on turning for so many years, and it is completely incomparable with iron products.

Then I began to experiment with the last two words under the guidance of the "calendarist", but we tried all possible results, and the lock did not open as I had imagined.

"It's useless, this day is wrong." Xiao Shirong said behind me.

"Since it is not the day of death, it is ...... The day of the burial? ”

The description of Gaozu's burial in the "Historical Records" is also very simple: "Bingyin, burial."

In this way, the beginning of the year and the month have not changed, but the only thing to change is the Bingyin day, so we tried 12 more against the calendar of the month, but the result is still ineffective. What's the problem?

Xiao Shirong and I looked at each other: "Are you sure this brother is reliable?" I asked Xiao Shirong.

", they've been with me for a long time, and they can't go wrong."

"That's something wrong with history, and these two days are not right."

"Then I don't know." He put on a posture of shaking his hands again, looking at him because he didn't want to use his brain at all.

I looked at the book again. Well? If he is buried here, then the record in the "Historical Records" must not be correct either. Gaozu over-feasted his father and fellow villagers in October of the twelfth year of the Han Dynasty? If he had died here at the time, this would have been the time. Of course, there is another possibility, that is, he was secretly transported here for burial after his death, and it is necessary to calculate the time from Chang'an to X State in that year.

"Hey, no, historian, why is it that October of the twelfth year is still before the fourth month of the twelfth year, and your book is not pirated, right? How did Gao Zu go back to see his father and fellow villagers when he died? ”

"No, the early Han Dynasty followed the Qin calendar, and the Qin Emperor was influenced by Zou Yan's Five Elements Doctrine, believing that Qin belonged to Shuide, and the winter corresponded to the water in the middle of the four seasons, and the winter began in October, so it was changed to October as the first year. October is earlier than April in the twelfth year of Han, just like January and June this year. ”

"Oh, I see. In that case, is it possible that Gao Zu actually died at that time and was secretly buried here? Then let's count it according to October of the twelfth year. ”

"It's useless, you only know the years and months, you don't know the day, there are 360 possibilities, you go and try them one by one." Xiao Shirong said.

It's not a nice thing to say, but it's true. Try one by one, then you have to try to the Year of the Monkey and the month of the horse, and the speculation may not be true, and if you turn it upside down, it may be a bamboo basket to draw water.

"And, I have to warn you," Xiao Shirong continued, "when this lock was designed, I don't know if there was a maximum number of times, and if you try enough, I don't care if you trigger the mechanism."

"It shouldn't be, it's been so many times, and there must be a mechanism for a long time."

Xiao Shirong didn't answer, so I asked him, "Then do you have any way?"

"Nope." He's not in charge of himself.

Working with this kind of person leaves me speechless. It was a strange tiring journey, so I simply sat on the ground on the side and rested.