A few days passed quickly, Professor Chen also recovered and was discharged from the hospital, and in the company of Zhang Gong and Feng Weiguo, Chen Zhijun drove the old man back to Gadfly Mountain early in the morning.

Before Professor Chen returned, Zhang Gong and the others had already explored the mountain centered on the Hades Temple in accordance with Professor Chen's instructions, and the detection results also verified Professor Chen's judgment, the current ancient tomb started from the back room behind the main tomb, and the mountain was carved out of a fan shape from the inside, and the left and right sides were equally distributed on both sides. There is a large karst cave about 2 meters above the back room, which is connected to other dark rivers through cracks in the mountain, and flows from the left side of the tomb, that is, the west side and the bottom of the main tomb.

Now that it has been determined that the entrance is in the main tomb, everyone no longer wastes time, and directly comes to the Bagua Jiugong Diagram, ready to open the two stone doors in front of them. Professor Chen stopped in front of the nine stones and pondered for a while and asked, "Last time, I said that the assumption through the four images is that the sum of four numbers equals 15, right?" I think since it is a nine-house chart, it should still be added horizontally and vertically, why are we now in 4 digits? Because the four elephants are 4 reasons? If the four elephants extend to the eight trigrams, it is eight numbers, plus the middle, so that the nine-palace diagram is complete. ”

Qin Gong recalled the assumptions of the day and said: "If you add up the 3 numbers according to the nine-palace diagram, it will become a multiple-choice question, and there is no need for any hints, and there will not be much suspense; If we follow the implication of the four images, it is the addition of four numbers, because we need to occupy one number first when we enter from the south. ”

"You're thinking of 1, 7, 3, 4, right, so how did you come up with your number?"

"The starting point for us to enter is 1, that is, the Vermilion Bird position, the Qinglong is 7, the White Tiger is 3, and the Xuanwu is 4 because it is opposite to the White Tiger Head."

"Lao Qin, your assumption is wrong, first of all, the standard nine-palace diagram is such a 3 times 3 pattern, as for the later development of 5 times 5 and so on, it has nothing to do with here, it doesn't matter, since it is a nine-palace diagram, then it should be the addition of 3 numbers, otherwise there will be no difficulty, of course, these 3 numbers are not without difficulty, this also has a sequence requirement, now the inspiration given by the four elephants I think is right, but you misunderstood. If according to the nine palaces of the gossip of the day after tomorrow, the green dragon represents the east occupation of the earthquake position, that is, the number 3, the red bird represents the south occupation of the position, that is, the number 9, the white tiger represents the west occupation of the exchange position, that is, the number 7, Xuanwu represents the north occupation of the Kan position, that is, the number 1, not to mention the addition of 3 numbers, that is, according to this order 3, 9, 7, 1 The four numbers are added, and the result is 20 is definitely not right, then now we will find out the real hint from the four elephant diagrams, three of the four elephants are head opposite, facing the middle 5, The Vermilion Bird is not, the Vermilion Bird head upwards, and in the Bagua it is opposite the Xuanwu, that is, the relationship between 9 and 1, and the relationship between 9 and 3 is put on the hexagram, personal analysis, since it is designed according to the acquired Bagua Nine Palaces, it should be dominated by the Suzaku Bird, and the number 9 it represents is not to be used directly, starting from the first number, it should be the Qinglong and the White Tiger and Xuanwu, 7 minus 1 minus 3 is equal to 3, and then the Suzaku and Xuanwu, that is, 9 minus 1 is equal to 8, and the third is the White Tiger and the Green Dragon, That is, 7 minus 3 equals 4, so I personally think it is a combination of 3, 8, and 4. ”

Qin Gong asked puzzledly: "But, Professor Chen, I can understand that the first number you said is that Qinglong, White Tiger and Xuanwu are opposite, so the number is subtracted to get the result, and the second is that the Vermilion Bird corresponds to Xuanwu I also understand, so why don't you play with Xuanwu in the third one?" ”

"My thinking is that the first time I used Xuanwu was because the three of them were relative, so I used them to subtract the number, the second time I used it because the Suzaku was directly facing it, that is, it was banned after it was used, and the third was the white tiger and the green dragon."

"It's understandable in this way, but it feels a little too simplistic."

"It's not necessarily simple, it's just that I'm saying it's simple, so let's try the combination of 3, 8, and 4 first!"

"Professor Chen, wait a minute, for the sake of insurance, I will use a bracket to hang you up first, in case there is a flap mechanism below, it will be fine."

"Don't worry, I have a number, 3, 8, 4, that is, the earthquake, the gen, the sun, the thunder, the mountain, the wind, that is, the left side of the slip up and down, it's okay, I trust my judgment; All of you retreat to the central platform! ”

Seeing that in addition to Chen Zhijun and a few other people who were still in front of the Jiugongtu, those who were local archaeologists and the staff of the TV station all ran to the central safety zone, Professor Chen didn't say anything and suddenly stepped to the middle of the left grid, under his sudden movements, everyone was so frightened that they quickly held their breath to observe, for insurance, Zhang Gong quickly reached out and grabbed the corner of Professor Chen's clothes tightly. Seeing that there was no movement, Professor Chen looked back at everyone with a solemn expression and took a step back, to the lower grid, but there was still no response, so he smiled at Zhang Gong, slowly put down his hand holding the corner of his clothes, and then jumped into the upper left grid, but there was still no movement, the stone door did not open, and no mechanism was triggered.

Professor Chen stood on the lattice in the upper left corner, turned his head and said with some frustration: "It seems that this answer is wrong. ”

"Then try again?" Zhang Gong asked nervously.

"Wait!" Chen Zhijun watched for a long time, although he didn't know what kind of mechanism would be underneath this, what danger would be, he had roughly known the mechanical principle after listening for a long time, and judged that the following was a mechanical combination similar to a password lock, so he said: "Since this is a password combination, unlock it through the following levers, just like now, it is to give you a mechanical password lock, even if you enter the password correctly, you need to press the open button again to open, so, I think you still lack a step, That's to press the turn on button! ”

Zhang Gong figured it out a little, but asked a little puzzled: "You mean you need to go one step further?" ”

"That step has nothing to do with the password, whether you are right or wrong, you need to go, so I think the most critical step should be the big horizontal rock in front!"

Professor Chen also suddenly understood, and laughed and said, "Haha, sure enough, the back waves of the Yangtze River pushed the front waves, ignoring this." ”

As soon as he finished speaking, Professor Chen jumped onto a large stone slab in front of him.

At the moment when Professor Chen stood on the big stone slab with his feet, in the two loud "boom" sounds, the two stone doors on the side of the stone statue fell into the ground at the same time, followed by a shock to the ground, and in this way, the corridors on both sides opened. Professor Chen was taken aback by the change that had been completed in an instant, and he calmed down and said to the stunned crowd behind him, "Take the lamp." ”

Seeing that there was no movement, Zhang Gong asked, "Lao Chen, how do you feel?" ”

"The front of the corridor on both sides seems to be connected, and now I don't feel anything unusual except that this stone statue is a little problematic."

"The stone statue is abnormal? You mean there's a mechanism in there? ”

"It should be, don't move yet, wait for the lamp to come over and study this stone statue, otherwise it will be bad if there are any arrows flying out here and hurting people."

Seeing the electrician coming, Professor Chen said to them: "Be careful next to this stone statue, don't touch it, and then you work hard to install a circle of lights at a distance of two meters in the temple of the underworld, and don't go inside except for the entrance." ”