Chu Tao pushed the star representing the four beasts on the golden seal inward, and then pushed the ashlar platform with all his might, and the stone wall rattled inward, like an open door.

Xie Junhe couldn't help but say that he jumped into the dark and deep stone path. Qin Shi followed closely. Ye Xiaosheng followed. Chu Tao took the golden seal and stepped forward.

However, less than ten steps into the stone road, the wind was rolling, "whooshing", the vast expanse in front of the eyes was dazzling, and the stone road suddenly brightened as day: it turned out that the oil lamps on both sides of the road were automatically lit. The oil was depleted, and it burned for the four of them in patches. Go deep into more than 30 stone steps, pass through the stone road that is more than 100 steps long, and suddenly open up in front of you. The spectacle left the four stunned.

Eight stone pillars three zhang high are arranged in a circle on the top of the sky and the ground, supporting a deep and wide palace. Each stone pillar is enough for three people to hug together. The length and width are more than ten zhang. Each stone pillar is hung with a bronze eagle totem. Who would have known that there was a magnificent and solemn underground palace hidden under this cold cliff!

On the wall in front of the underground palace, a huge mural is carved. In the upper right corner of the mural, thousands of troops and horses are galloping, and the dust is flying into clouds. On the lower left, it is a building boat that covers the sky and the sun. The two face off. In the meantime, a river of turbid waves rolled up, separating the saber rattling of the north and the south. The rolling turbid waves washed and swallowed the soldiers and horses that stopped by the long river......

The golden seal opens up a dusty past. When was there such a great war? Perhaps, every year, after all, the rivers and lakes have never been calm, and the number of people who have died in vendetta over the years is definitely greater than this scene.

Chu Tao stood in front of the mural and pondered.

In the center of the eight stone pillars, there is an ancient altar. On the altar, there stood a long sword—the blade of which still shone after years of wearing. Qin Shi and Xie Junhe ran to the top of the altar at the same time, both hands firmly holding the hilt of the sword, arguing with red faces, but no one would give up. Ye Xiaosheng added fuel to the fire, and jumped onto the altar with Qin Shi.

However, the sword loosened in the cracks in the stone.

When Chu Tao shouted, "Let go of the danger!", it was already too late. The brute force of the three had lifted the sword up. That's when they heard the ground tremble. Suddenly, the surrounding area collapsed into an abyss, and the icy river poured into a torrential water, submerging the stone ruins in an instant and calmly rising high. Only a five-step radius of the altar is left on top for three people to stand on.

Beneath this sword lies a mechanism – ironically, it seems to have been designed to punish the ungreedy.

Qin Shi said in horror: "We are underwater, if we don't think of a way, we will definitely sink to the bottom with the underground palace!"

However, as soon as the words fell, suddenly arrow feathers fell in the air from all directions, and it was actually a crossbow machine hidden on the top of the eight stone pillars, Xie Junhe, Qin and Ye immediately rushed left and right with their swords back to back to block. However, the arrows are as dense as flying locusts, and they cannot be guarded against. Qin Shi was finally injured. A crossbow arrow grazed his left arm, leaving a deep blood mark.

Chu Tao was also trapped under the mural because of this collapse, and he couldn't advance or retreat. At the last moment, he suddenly noticed that there was a piano table under the mural. Could it be that the qin can be used to solve the danger? Chu Tao quickly thought in a daze: If this qin is placed here, if it has any connection with the organ, the Changhe Yinqu should be the most suitable tune. A dead horse was a live horse doctor, and he flew to the front of the piano, but he was deeply stunned.

The lying guqin only has a piano board and no strings!

How do you play a piano without strings?