"It's the same with the dragon in China," replied Chen. He took the torch from Princess Fragrance and began to examine the end wall of the tunnel for some trace of a door or an opening mechanism. Raising the torch, he saw a huge ring door knocker with a long-handled axe lodged in it.
"There's a door," Huo Qingtong exclaimed joyfully. Chen passed the torch over to her and tried to pull the axe away, but it had rusted onto the iron ring and was immovable. He took out his dagger and scraped away the rust, then with an effort, managed to pull the axe free. He found it very heavy.
"If this was his weapon, then His Highness was a strong man," he said with a smile.
On closer examination, they found there was an iron ring fastened to all four corners of the stone door. Chen took hold of each of the rings and gave them a mighty tug, but the door did not move even a fraction. He tried pushing it instead, and with load squeaks, it slowly began to swing open. They saw the door was at least ten feet thick, and in fact was more like a huge boulder than a door.
The three looked at each other with expressions of jubilation on their faces. Chen raised the torch high and with the dagger in his other hand, led the way through the door. One step inside, something crunched under his foot, and he saw a pile of bones on the floor. Looking ahead, there was a narrow tunnel leading off into the darkness, just big enough for a person to walk along. Skeletons and swords were scattered all about them.
Huo Qingtong pointed to the back of the great stone door. "Look," she said. Under the torchlight they saw deeply scored lines obviously scratched out with swords.
"These people must have been locked in here by the king," said Chen in a startled voice. "They tried the best they could to get out, but the door was too thick and the jade rock too solid."
"Even if they had had ten blades as sharp as your dagger, they would still never have broken through this door," replied Huo Qingtong.
"They must have considered every alternative, and finally one by one died as hope faded…"
"Don't! Don't go on," Princess Fragrance pleaded. The scene was too tragic. She could not bear to hear any more.
"Why did the king stand guard on the other side of the door instead of escaping?" Huo Qingtong asked. "I can't work that out at all." She pulled out the map and looked at it for a moment. Her face brightened. "At the end of this tunnel there should be a great hall and other rooms," she said.
Slowly, they walked forward, treading on human bones as they went. They turned two corners, and emerged into a cavernous hall as Huo Qingtong had predicted. They stood at the entrance and looked about. The floor of the great hall was filled with skeletons and weapons lying about at random, evidence that a furious battle had been fought here.
As they walked into the hall, Chen's dagger suddenly shot out of his hand and fell to the floor with a clatter. At the same instant, the belt supporting Huo Qingtong's sword around her waist snapped, and the scabbard fell heavily to the floor. The three jumped in fright. Huo Qingtong bent down to pick up her sword, but as she did so, the darts in her pocket flew out with a whoosh and dropped to the ground in the same manner.
Chen grabbed the two girls and leapt backwards several paces, steeling himself to defend them against any attackers. But there was not a sound from the hall. He wondered what kung fu could snatch the weapons from their hands and even suck Huo Qingtong's darts from her pocket.
"We have come only to escape wolves and with no other purpose," Chen shouted into the darkness in the Muslim language. "Please forgive us for any indiscretions we may have committed."
There was no answer but the echo of his own words returning from the far side of the hall.
As Huo Qingtong's initial fright receded, she walked forward again and stooped to pick up her sword. But it was stuck to the floor as if nailed in place. She tried again using all her strength and managed to free it, but a second later, it flew out of her hand again and hit the ground with a clang.
Chen realised what was happening.
"There must be a magnet under here," he said.
"What's a magnet?" asked Huo Qingtong.
"Sailors say there is a big mountain in the far north which attracts pieces of iron which hang free, making them point north to south. When they're on the ocean, they rely on something called a magnetic compass to find their direction."
"And you think there's another magnet mountain under here which is attracting our weapons?" asked Huo Qingtong.
"I think so. Let's try it." He prized up his dagger and placed it and a wooden chair leg on his left hand with his right hand on top to hold them in place. When he took his hand away, the dagger flew to the ground but the chair leg remained motionless.
"So as you see, the magnet is powerful," said Chen, picking up the dagger again and gripping it tightly.
Huo Qingtong walked on a few more steps. "Come here!" she called. Chen ran over and saw a skeleton which was still standing. A few tattered pieces of clothing hung on the frame, and its right hand was holding a white-coloured sword which was stuck into the skeleton next to it.
"It's a jade sword!" Huo Qingtong exclaimed. Chen carefully extracted the sword from the skeleton's grasp, and with its support gone, it collapsed to the floor in a heap.
The jade sword's blade was very sharp, but it was still frail enough to shatter if it clashed with a metal blade. Looking round, they saw there were many other jade weapons of all sizes lying about the hall.
"I know!" Huo Qingtong suddenly said. "The master of this mountain certainly planned things very carefully."
"What?" asked Chen.
"He used this magnet to draw the enemy's weapons away and then his guards finished them off with the jade swords."
Princess Fragrance pointed at a skeleton wearing a metal breast plate. "Look! Some of the attackers were wearing armour. i'll bet they couldn't get on their feet."
"But what I don't understand," Huo Qingtong continued, "is if the guards with the jade weapons killed all the attackers, why did they also die here as well?"
Chen had also been considering that problem, but could think of no explanation.
"Let's go further in and explore," said Huo Qingtong.
"No," Princess Fragrance said. "Let's not, sister."
Huo Qingtong saw the anguished expression on her face and squeezed her arm. "Don't be afraid. Perhaps there are no skeletons over there."
They walked to the other side of the hall and looked into a smaller chamber. But the scene there was even more terrible than in the first hall. Dozens of skeletons were piled about the room, most of them still standing as if alive. Some had weapons in their hands, some didn't.
"Don't touch anything!" said Chen. "There must be some strange reason for them dying like this." They continued on, and passed out of the chamber into a tunnel. After a couple of bends, they came upon a small swing door. As they pushed it open, their eyes were assailed by a bright light. Sunlight poured in from a crack in the ceiling hundreds of feet above into an excuisite jade room which had obviously been carved out of the mountain at this spot to take advantage of the natural lighting.
Although it was only a single shaft of sunlight, the three were very excited at the sight of it. The room they found themselves in had a jade bed, a jade table, jade chairs, all beautifully carved. A skeleton reclined on the jade bed, while in one corner of the room, there were two other skeletons, one large and one small.
Chen extinguished the torch. "We'll rest here," he said. They pulled out their dry rations and water and had a small meal.