"Ali has gone to Allah's side and I will soon follow him. Our warriors are many, and with all his soldiers dead, Sanglaba will certainly not survive. He will never again be able to oppress us followers of Islam. I myself killed his only son, so we will be free of oppression from his descendants, because he has none. In the future, our people will be able to live peacefully in the desert and on the grasslands, young girls will be able to lie in their lovers' arms and sing. My brother, Ali, myself, we are all dead, but we conquered the tyrants. Even if their fortress had been stronger than it is, we would still have broken through eventually. May Allah, the True God, protect our people."

Huo Qingtong slowly rolled up the ancient scroll. The three of them sat for a long time without saying a word, deeply moved by Mami's courage and virtue. Finally Princess Fragrance, her eyes full of tears, sighed.

"To relieve the oppression of her people, she was willing to leave her loved ones, to have her tongue cut out and even to kill her own child," she said.

Chen started in fright, thinking of his own conduct compared to this lady of old. Faced with the task of recovering China for the Chinese people, he selfishly thought only of his own romantic problems.

Princess Fragrance noticed the sudden change in his expression. She pulled out her handkerchief and went over to wipe the beads of sweat from his brow, but Chen pushed her away impatiently. She stepped back, startled at his aggressiveness, and Chen's heart softened. Taking the handkerchief from her, he made up his mind that while the great endeavour of the Restoration remained unfinished he would pay no further attention to his romantic affairs, and would treat both sisters purely as friends, as his own sisters.

Huo Qingtong, meanwhile, was once more poring over the map and pondering phrases in the ancient scroll.

"It says here that Sanglaba came to this Jade Room and wanted her to escape with him to the Jade Pool," she murmured. "But this room is a dead end… Afterwards, he returned the way he had come. He must have been extraordinarily strong. The Islam warriors failed to stop him and he forced his way through to the stone door and locked them all inside, condemning them to death. But the map clearly indicates another tunnel to the pool…"

"Then it must be in this room," Chen replied. He lit another torch and began to examine the walls closely for cracks, while Huo Qingtong looked at the jade bed. Chen remembered how Wen Tailai had been captured at Iron Gall Manor and said: "Could the tunnel be under the table?" He placed his hands beneath the round table top and tried to lift it, but it did not budge.

"There's something strange about this table," he said, pleased. Huo Qingtong brought the torch over to give him more light.

"Oh, look!" Princess Fragrance exclaimed. "There's a design carved onto the surface." They looked closer and saw that it was a herd of winged camels. They had not noticed it before because the carving was extremely shallow. But strangely, the heads and bodies of the camels were not joined, and were more than a foot away from each other. On an impulse, Princess Fragrance grasped the table edge and pulled it from left to right in an attempt to line up the heads and bodies, and it did indeed move an inch or so. Chen and Huo Qingtong joined her and slowly moved the rim round until the camels were whole again. Just as the carving was complete, a grinding sound began and a panel beside the bed slid back to reveal a row of steps leading downwards. The three shouted in triumph.

Chen led the way into the hole, torch in hand. The passage twisted and turned for a while and then ran straight for more than a hundred feet. Then, around a corner, they burst out into daylight. Looking around they saw they were in a small basin surrounded by high mountains. In the centre was a circular pool, the water in which was as green as jade. They were immediately enraptured by the beauty of the scene before them.

"The scroll said that if beautiful people washed in the pool they would become even more beautiful," Huo Qingtong said to her sister with a smile. "You should go and wash."

Princess Fragrance blushed. "You are older than I, you go first," she replied.

"Ai-ya! But I will become more ugly," Huo Qingtong protested. "Are you going to wash or not?" Princess Fragrance shook her head.

Huo Qingtong walked to the edge of the pool and put her hands in the water: it was intensely cold. She cupped her hands and scooped up some water and saw it was very clear: the water appeared green only because of the jade all about. She took a sip and found it extraordinarily cool and tasty. They all drank their fill. The white peak towering above them reflected off the surface of the pool in a picture of loveliness, and Princess Fragrance lazily moved her hand about in the water, unwilling to leave such an enchanting place.

"The thing to do now is to think of a way to avoid those four devils outside," said Huo Qingtong.

"First, let's bring Mami's remains out and bury them beside the pool," Chen suggested.

Princess Fragrance clapped her hands in delight. "It would be best if we buried her and Ali together," she said.

"Yes. I expect the skeleton in the corner is Ali's."

They returned to the Jade Room. As they were collecting Ali's bones, they found amongst them some bamboo slivers used in China in ancient times for writing. Chen picked them up, and saw they were thickly covered with Chinese characters written in red ink on a black background. Glancing through them, he recognized the writings of the Chinese philospher Zhuangzi. He had thought it might be some special book and was rather disappointed to find it was instead something he had read and memorized as a child.

"What is it?" Princess Fragrance asked.

"It's an old Chinese book, but it's not much use except to archaeologists." He threw the slivers back on the ground, and as they scattered, he noticed one which looked slightly different from the rest. Beside every character, were circles and dots and Muslim writing. Chen picked the sliver up and saw it was a section entitled 'The Butcher Dissects the Cow' from the philosopher Zhuangzi's lecture, 'The Secret of Caring for Life.' He pointed to the Muslim characters written alongside.

"What does this say?" he asked Princess Fragrance.

"'The key to smashing the enemy is here'," she replied.

"What can that mean?" he wondered out loud, greatly surprised.

"Mami's last testament said Ali got hold of a Chinese book and had learned kung fu from it. This could be it," Huo Qingtong suggested.

"Zhuangzi taught that one should be oblivious of emotion in adversity and obedient to one's superiors," said Chen. "It has nothing to do with kung fu." He threw the sliver back down again, then picked up the pile of bones and walked out. They buried the remains of Mami and Ali beside the Jade Pool and bowed respectfully before the graves.

"Let's go now," said Chen. "I wonder if the white horse managed to escape the wolves?"

"What is the section of that book about?" Huo Qingtong asked.

"It's about a butcher who is very good at his job. The movements of his hands and legs, the sound of his knife chopping, are all perfectly coordinated. The sound has the rhythm of music, the movements are like dancing."

"It would be useful to have such skill when facing an enemy," Huo Qingtong commented.

Chen stared at her in surprise. Every word of Zhuangzi was familiar to him, but suddenly he felt as if he had never read it before. The words of 'The Butcher Dissects The Cow' ran through his mind: 'When I first began cutting up oxen, all I could see was the ox itself. After three years, I no longer saw the whole ox. And now – now, I go at it by spirit and don't look with my eyes. Perception and understanding have come to a stop and spirit moves where it wants.'