The two of them stood on the left and right, and later realized that when pushing the back of the stone figurine, stepping on the empty space would not cause the stone figurine to rotate, so that the whole chessboard could move around freely.

Of course, although this meant that he could directly reach the stone gate at the back, Fang Ling knew that it was impossible to open the stone gate until the chess game was solved.

Fortunately, Fang Ling and Mo Xiang are both masters of chess, and after looking at the chess game, they quickly found a path to achieve the game of nine deaths.

Next, it is to move chess and eat chess, as the chess pieces shrink into the ground, the chess pieces on the chessboard become fewer and fewer, and it does not take long for the endgame of war chess to finally form a life-and-death chess endgame.

Nine deaths and life are certain, and there is a "boom" sound at the stone gate, as if something heavy has shrunk in, and then there is silence again.

Fang Ling secretly breathed a sigh of relief, this third level looks simple, but it is a complete trap, if you don't find out that this is a war chess, you don't know what the endgame of nine deaths and one life, let alone a master in chess, then this is a dead place at all, and it is impossible to crack it.

Pushing open this stone door, Fang Ling found that this stone door is several zhang thick, there are round holes in the wall behind the door, you can clearly see the stone pillars inside, these stone pillars are not only thick, but also the color is like iron, it is definitely not an ordinary stone, if it is not for the Nine Deaths and Life Bureau to let these stone pillars shrink back, I am afraid it is really difficult to open this stone door.

Walking along the stone path, there was a small hall in a short time, the small stone hall seemed to be a place for people to rest, there was a stone table on the left, with several stone benches, and a stone bed on the right.

At the end of the place, there is a stone offering table, on the flat table there is a god card, there is an incense burner under the god card, the incense on it has long been extinguished, and under the incense burner there is a large wooden box, looking at the style is a thousand locks Xuanji box.

The two walked to the offering table, and found that in addition to what they had just seen, there was a yellowed booklet on the table, and after opening the booklet, they saw dense small characters written on it, which recorded the various processes and times of the excavation of the underground palace, only to turn to the last page, but there were a few lines of text:

Yu Mozhang was worthy of the position of the chief of the palace craftsmen, and was ordered by His Majesty to lead three hundred craftsmen to secretly develop the Heavenly Divine Crossbow. His Majesty's rampant conquest is tyrannical, and the people are constantly in trouble, but if you don't respect your orders, the life of the craftsman is not guaranteed, only painstaking study, it took ten years of hard work, and then the day of the crossbow was completed, but it was when Your Majesty died, the princes from all over the country rose up, and the imperial city was in chaos.

In order to prevent it from falling into the hands of thieves, the rest of the craftsmen entrusted them to flee all the way with the crossbow and finally arrived at the land of the state.

The country of the princes, each has its own plan, the world is ignorant of the master, the rest of the only way to spend half a lifetime of effort to build the underground palace, the heart of the study into the "Secret Technique", it and the crossbow together in the thousand locks of Xuanji box, and the key of the underground palace locked in another box, to warn future generations to keep a low profile, to guard the underground palace for generations.

But Yu Zizhi knows that the underground palace will eventually be opened, so he does not hesitate to set up a life-killing mechanism to prevent the villain from succeeding, and those who can break through to this level must have great wisdom.