"Sister!" Princess Fragrance screamed, and threw herself onto the girl.

It was Huo Qingtong. She had run into the Three Devils again while searching for Chen and her sister and had had no strength to resist. Hahetai had wanted to kill her immediately to avenge the death of their brother, but Gu overruled him saying they should take her back and kill her in front of their dead brother's grave. They started heading back east, but after a day or so, they found themselves being chased by a wolf pack. As they fled, they happened to spot the column of black smoke started by Chen and rode towards it.

Huo Qingtong began to regain consciousness. Princess Fragrance looked at Chen beseechingly. "Tell them to let my sister go," she implored.

Chen turned to Gu. "Who are you and why have you seized my friend?" he asked. Tang strode in front of Gu and coldly sized up Chen and Zhang.

"We thank you two gentlemen for saving us," he said. "What are your names?"

Before Chen could answer, Zhang said, "He is the Great Helmsman of the Red Flower Society, Chen Jialuo." The Three Devils started in shock.

"And you, sir?" Tang asked.

"I am Zhang Zhaozhong."

Tang gasped. "It's the Fire Hand Judge. No wonder you're both so capable." He told them his name and those of his two colleagues.

Chen's anxiety immediately increased, and he wondered again how they were going to escape. With four tough opponents to deal with now, it would be even harder than before.

"Let us forget our differences for the moment," he said. "Do any of you have any idea of how we might escape?"

The Three Devils looked at each other. "We would welcome your suggestions, Master Chen," said Hahetai.

"If we face the wolves together, there is a chance we will survive. If we fight amongst ourselves, they will eat us all." Tang and Hahetai nodded slightly, but Gu just glared at him angrily. "Therefore, I ask Brother Gu to immediately release my friend, following which we can together work out a plan to beat the wolves."

"And what if I won't let her go?" Gu shouted back.

"Master Gu, if we start fighting, it doesn't matter who wins or loses, we will all die. Please reconsider."

"You'd better let her go," Tang whispered to him." Gu had gone to considerable trouble to capture Huo Qingtong and he was extremely loath to give her up again. "Brother, if you don't let her go, I won't be able to help you," Tang added.

Hahetai walked over and cut the bonds binding Huo Qingtong. As Chen walked over to her, Huo Qingtong suddenly shouted: "Watch out behind!" and he ducked down just as a wolf swept over him. It charged at Princess Fragrance, but Chen grabbed its tail and using all his strength pulled it to a halt. The wolf whipped its head round, snapping and snarling, and with a single blow, Chen broke its neck. Another wolf leapt towards him, and he quickly drew his dagger and thrust it at the beast, a huge, cunning animal which dodged the blade with ease.

Three more wolves jumped into the ring. Hahetai grabbed one by the neck and slung it back out, Zhang cut the second in two with his sword, while Tang fought fiercely with the third. Hahetai stoked up the fire to stop other wolves from entering.

On the other side, Chen feinted with the dagger to the left to throw his attacker off guard, then plunged the blade down towards its head. Unable to avoid the stroke, the wolf opened its huge mouth and bit hard onto the dagger. Chen pushed the blade in with all strength, but despite the pain, it hung on desperately. Chen tried to pull the dagger back out but the beast refused to yield. Increasingly anxious, Chen mustered his strength once more and punched the wolf right between its eyes, smashing its skull. The wolf fell back dead and the dagger came free, the blade glinting coldly as it reflected the flames.

But the dagger's blade was also still firmly lodged between its teeth. They were all perplexed at this: the dagger was obviously in Chen's hand and had not snapped. Where had the blade in the wolf's mouth come from?

Chen bent over and tried to pull the blade out of the beast's mouth, but although the wolf was dead, its teeth was still clamped tightly shut. He used the dagger to slit open the wolf's jowls, and the muscles and tendons on its face collapsed, freeing the blade. Chen examined it closely and saw that it was hollow, like a scabbard. He stuck the dagger blade inside, and found it fitted perfectly. Huo Qingtong had said when she presented the dagger to him that it was said to contain a great secret. If it had not been for this wolf and its strong teeth, who would have guessed that there was a blade within the blade?

Princess Fragrance took the dagger from Chen and examined it, marvelling at the design of the second scabbard and the precision of the workmanship. She turned the hollow outer blade upside down and a small white pellet rolled out. Chen and Huo Qingtong bent down to get a closer look and saw it was a small ball of wax.

"Let's open it," Chen said. Huo Qingtong nodded. He picked the ball up and lightly squeezed it, cracking the wax open, revealing a small piece of paper inside, which he spread out. On the paper was a map drawn as densely as a spider's web.

Zhang had seen them discover the piece of paper, and glanced at it stealthily. But he was disappointed to find it was covered in Muslim writing, which he could not understand.

Chen knew something of the Muslim written language, but he could not grasp the meaning of the classical characters on the piece of paper and handed it over to Huo Qingtong. She examined it closely for a long time, then folded it up and placed it in her pocket.

"What does it say?" Chen asked. Huo Qingtong did not answer, her head hung low.

Princess Fragrance knew her sister well and smiled. "She is trying to work out a difficult problem. Don't disturb her," she said.

Huo Qingtong sat down on the ground and began to draw lines in the sand with her finger. She drew a diagram then rubbed it out and drew another. After a while, she wrapped her arms around her knees, deep in thought.

"You are still weak. Don't overtax yourself," Chen said to her. "You can work it out later. The important thing now is to think of a plan for getting out of here."

"I'm working on a way to escape these hungry wolves and these human wolves as well," Huo Qingtong replied, pouting angrily at Zhang as she spoke. She continued her meditations for a moment, then said to Chen: "Please stand on a horse and look westwards. Tell me if you can see a mountain with a white peak."

Chen led the white horse over and did as she said. In the distance, he spied a cluster of mountains, but could see none with a white peak. He searched carefully for a minute longer then looked down at Huo Qingtong and shook his head.

"According to the map, the Secret City should not be far from here, and we should be able to see the White Jade Peak."

Chen jumped off the horse's back. "What secret city?" he asked.

"When I was young, I heard people talk about an ancient city that was buried in this desert," she replied. "The city was once extremely prosperous, but one day a great sand storm arose, and dunes as large as mountains buried it. None of the city's residents escaped." She turned to Princess Fragrance. "Sister, you know the story better than I do. You tell it."

"There are many stories about the place, but no one has ever seen the city with their own eyes. No," she corrected herself. "Many people have been there, but few have returned alive. It is said that there are huge amounts of gold, silver and jewels there. Some people who have lost their way in the desert have found their way into the city by chance and have been overwhelmed by the sight of such wealth. They naturally began to load the gold and jewels onto their camels to take away with them. But no matter which way they went, they found it impossible to get out of the city.