Having agreed on their story, Zhou Qi helped him to mount the horse. The two made their way out of the trees, and chose a small track heading straight towards the sun.

The northwest is a desolate place. Hungry and tired, they had to travel for more than two hours before finally spotting a mud hut.

Xu dismounted and knocked at the door. After a moment, an old woman came out. Seeing the strange clothes they were wearing, she looked at them suspiciously. Xu gave her some of the story they had concocted, and she sighed.

"These government troops, always making trouble," she said. "What is your name sir?"

"My name is Zhou," said Xu.

Zhou Qi glanced at him but said nothing. The old woman invited them inside and brought out some wheat cakes. They were black and rough, but hungry as they were, tasted delicious.

"Old woman," said Xu, "I am wounded and am not able to travel. We would like to spend the night here."

"There's no problem about your staying here, but poor people's homes have little to eat in them, so don't blame me on that account, sir."

"We are eternally thankful that you are willing to put us up," Xu replied. "My sister's clothes are all wet. If you have any old clothes, I would appreciate it if you would allow her to change into them."

"My daughter-in-law left some clothes behind. If you don't mind, mistress, you could try them on. They'll probably fit."

Zhou Qi went to change. When she came out, she saw Xu was already asleep in the old woman's room.

Towards evening, Xu began babbling incoherently, Zhou Qi felt his forehead and found it feverish. She decided his wounds must be festering. She knew such a condition was extremely dangerous, and turned to the old woman. "Is there a doctor near here?" she asked.

"Yes, there is, in Wenguang town about twenty li east of here," the old woman replied. "The most capable one is Doctor Cao, but he never comes out to country places like this to see patients."

"I'll go and fetch him," Zhou Qi said. "I'll leave my…my brother here. Please keep an eye on him."

"Don't you worry about that, miss," the old woman replied. "But the doctor won't come."

Zhou Qi stowed her sword beside the horse's saddle and galloped off. Night had already fallen when she entered Wenguang town.

She asked a passer-by where Doctor Cao lived, then galloped straight on to his residence. She knocked on the door for a long time before a man finally opened it.

"It's already dark. What are you banging on the door like that for?" the man demanded.

Zhou Qi was furious at his manner, but remembered that she was appealing for help. "I've come to ask Doctor Cao to visit a patient," she said, controlling herself.

"He's not in," said the man. Without another word, he turned and began to close the door.

Panic-striken, Zhou Qi pulled him out of the doorway and drew her sword. "Where's he gone to? Quickly!"

"He's gone to Little Rose's," the man replied in a quavering voice.

Zhou Qi brushed the blade over his face. "What is Little Rose's?"

The man was frantic with fright. "Your Excellency…Miss, Little Rose is a prostitute," he said.

"Prostitutes are bad people. What's he gone to her place for?" Zhou Qi asked.

The man wanted to laugh at the sight of this girl who was so ferocious and yet so ignorant of worldly matters, but he did not dare. "She is a good friend of our master," he said.

"Lead me there quickly."

With the sword resting on his neck, he dared not disobey and led her off down the street.

"This is it," he said, pointing to a small house.

"Knock on the door. Tell the doctor to come out."

The man did as she said, and the door was opened by the Madame of the house.

"This lady wants my master to go to visit a patient," the man said. "I told her the master was busy, but she wouldn't believe me and forced me to come here."

The Madame gave him a look of contempt and slammed the door.

Zhou Qi rushed forward to stop her, but was too late. She beat thunderously on the door for a while, but not a sound came from inside. Absolutely furious, she kicked the man to the ground.

"Get lost!" she shouted.

The man picked himself up and ran off.

Zhou Qi waited until he had disappeared then leapt over the wall into the courtyard of the house. She saw light coming from a room nearby, and stealthily made her way over towards it. Crouching down, she heard two men talking. She licked the tip of her finger, then wet a small part of the window paper and made a hole in it. Putting her eye to the hole, she saw two men lying on a couch, talking. One was stout, and the other thin and tall. A tartishly seductive girl was pummelling the thin man's thighs. The stout man give a wave of his hand and the girl stood up.

"I can see you two want to discuss more ways of creating mischief," she said with a smile. "You ought to accumulate some good deeds, otherwise you may give birth to sons without arseholes."

"Damned nonsense," the stout man shouted back with a laugh. The girl smiled and walked out, locked the door, then turned and went into an inner hall.

"That must be Little Rose," Zhou Qi thought. "She's really shameless, but there's some truth in what she said."

She watched as the stout man pulled out four silver ingots and placed them on the table.

"Brother Cao," he said. "There's two hundred taels of silver. We are old business partners, and that's the old price."

"Master Tang," the thin man replied: "Take these two packets of medicine, and have a good time. The red packet you give to the girl, and in less time than it takes to eat a meal, she will be unconscious to the world and you can do whatever you like with her. You don't need me to teach you anything about that, do you?"

The two men laughed together.

"This black packet you give to the man," Cao continued. "Tell him it will speed his recovery. Soon after he takes it, his wounds will begin discharging blood and he will die. It will appear that his wounds have simply re-opened and no-one will suspect you. What do you think of such a ruse?"

"Excellent, excellent," Tang replied.

"So, Master Tang, you have gained both the girl and the money. Doesn't two hundred taels seem like rather a small reward for such a service?"

"We are brothers, and I wouldn't try to deceive you," the other said. "The girl certainly has a pretty face. I could hardly restrain myself even when I thought she was a boy because of the way she was dressed. But there is nothing much special about the man, except that he's with the girl, so I cannot allow him to live."

"Didn't you say he had a flute made out of gold?" Cao asked. "That flute must weigh several catties alone."

"All right, all right, I'll add another fifty taels," Tang said, and pulled out another ingot.

Zhou Qi became angrier and angrier as she listened, and ran to the door, kicked it open and charged straight inside. Tang gave a shout and aimed a flying kick at Zhou Qi's sword wrist. Zhou Qi flipped the sword over and smoothly cut off his right foot then thrust the blade into his heart.

The thin man stood to one side, struck dumb with fright. His whole body shook and his teeth chattered. Zhou Qi pulled her sword out of Tang's corpse and wiped the blood off the blade onto his clothes, then grabbed the thin man.

"Are you Doctor Cao?" she shouted. The man's legs folded and he fell to his knees.

"Please…miss…spare my life…"

"Who wants your life? Get up."

Cao shakily stood up, but his knees were still rubbery, and he had to kneel down again. Zhou Qi put the five silver ingots and two packets of medicine on the table into her pocket.

"Out," she ordered.

She told him to fetch his horse, and the two mounted up and galloped out of the town. In less than two hours, they arrived at the old woman's hut. Zhou Qi ran to Xu and found him still unconscious. In the candlelight, she could see his whole face was bright red and knew he had a terrible fever. She dragged Cao over.