Deng returned two hours later.

"The Commander says that Master Wen's crimes are serious in the extreme, and that normally no-one would be allowed to visit him," he said.

"Normally!" Wei exclaimed.

"But as Master Chen has agreed to return the vase, the Commander will risk his neck and allow Master Chen to see him. However, there are two small conditions he must agree to. First, the Commander has recklessly agreed to this purely in order to cement his friendship with Master Chen. If anyone else found out about it, it would be disastrous."

"Commander Li wants Master Chen to agree not to reveal a word about the affair to anyone, is that it?"

"Exactly."

"I can agree to that on our Master's behalf," Wei said.

"The second point is that only Master Chen will be allowed to make the visit."

Wei smiled. "Commander Li is naturally afraid that we will take advantage of the opportunity to try to rescue Master Wen. All right, we agree. Master Chen will go by himself. But we have not agreed not to attempt a rescue."

"You are a good man, Brother Wei, and I value your word. Please ask Master Chen to come to the Yamen this evening."

"If Zhang Zhaozhong is around when Master Chen and Master Wen meet, it will naturally be impossible to preserve the secrecy of the agreement, which could be extremely inconvenient for Commander Li."

"That is true," Deng replied. "The Commander will think of some excuse for getting him away."

When Deng had left, the heroes gathered in the Great Hall to await their orders for Wen's rescue.

"Brother Xu, I will leave the arrangements to you," Chen said.

Xu was silent for a moment. "Now that we know Zhang Zhaozhong will be elsewhere and that the Great Helmsman can get inside, it will of course be much easier to rescue Brother Wen," he said. "But Li is also certain to prepare for that eventuality. We must first work out what he plans to do and then do something unexpected."

"He will gather a large contingent of troops and surround the entrance to the dungeon and may even enlist the support of some Imperial Bodyguards," Yang pointed out. "They will allow only the Great Helmsman in, and only the Great Helmsman out."

"We had better be waiting outside the Yamen just in case the Turtles try anything against the Great Helmsman," said one of the Twin Knights.

"We will of course be waiting outside," answered Xu. "But I don't think Li will dare to harm the Great Helmsman with the vase in our hands."

"I've got it," Chen said suddenly. "When I go to see Fourth Brother, I will wear a wide cape and a large hat with a face cover…"

Xu knew what he meant. "But that way, we would gain one man only to lose another. It's not a good idea."

"Finish what you were saying, Great Helmsman," said Priest Wu Chen.

"Once I am in the dungeon, I will exchange clothes with Fourth Brother and then let him leave. The guards will think it is me. You can be waiting outside to receive him."

"But what about you?"

"The Emperor and I have a special relationship. Once they discover the switch, they will let me go."

The heroes were unhappy that their leader was placing himself in such danger, but they were forced to agree it was probably the best plan.

All the arrangements were completed. Chen threw on a large cape with the collar turned up, pulled a hat well down over his face, and set off for the Commander-in-Chief's Yamen accompanied by 'Leopard' Wei. By the time they arrived, it was already close to dusk and the first stars had began to appear at the edge of the sky. A man came out to meet them.

"Is that Master Chen?" he whispered. Wei nodded. "Please come with me. This other gentleman, please stay here."

Wei stood and watched as Chen followed the man into the Yamen. A flight of ravens flew overhead through the evening mist on their way home, cawing as they went, and Wei's heart beat wildly as he wondered what would happened to the Great Helmsman. After a while, the rest of the heroes arrived and spread out around the Yamen.

As he entered the gate, Chen saw the Yamen was filled with thousands of soldiers on guard. The man led him through three courtyards and into a room.

"Please take a seat," he said, and left. A moment later, Commander Li entered and saluted Chen. "It is an honour to meet you," he said.

Chen opened his cape and revealed his face. "We met the day before yesterday on the lake," he answered with a smile.

"You may now see the prisoner," said Li. "Please follow me."

As they reached the door, an attendant rushed breathlessly towards them.

"Commander, the Emperor has arrived," he reported. "Master Deng has gone out to meet him."

Li started in surprise and turned to Chen. "You had better wait here for a while," he said.

Li ran through to the front courtyard and saw Qian Long with a large contingent of Imperial Guardsmen. He hurriedly knelt down before him and kowtowed.

"Arrange a well-guarded room," said Qian Long. "I want to personally interrogate Wen Tailai."

Li invited the Emperor into his own study, and the Imperial Bodyguards established themselves on all sides of the study and even on the roof.

"I have important matters of a confidential nature to discuss with this prisoner. No-one else must hear," Qian Long told Bodyguard Bai Zhen.

"Yes, Your Highness," Bai replied and retired.

A moment later, four bodyguards entered carrying a stretcher on which Wen, handcuffed and chained, lay asleep. The bodyguards retired and there was silence for a time.

"How are your injuries?" Qian Long asked. Wen's eyes opened and he sat up. His wounds had not yet healed, but his mind was clear. He had seen Qian Long once before when he had entered the Imperial Palace with Master Yu, but was surprised at suddenly meeting him again in Hangzhou.

"I'm not dead yet," he said coldly.

"I asked my men to invite you to come to see me because there is something I wish to discuss with you."

Wen grunted.

"When you visited me with that leader of yours, Master Yu, I discussed an important matter with him. Unfortunately, I hear he became ill and died very soon afterwards. It was a great pity."

"If Master Yu had not died, I expect he would be imprisoned here with me," replied Wen.

Qian Long laughed. "You underworld fighters, you're very frank. You say whatever you are thinking. Now, Master Wen, I have only one question for you. Answer me honestly, and I will immediately release you."

"Release me? Ha! Do you think I am a three-year-old child? I know that you cannot eat or sleep easy knowing that I'm still alive. You have stayed your hand until today only because you wish to question me."

"You're much too suspicious," said Qian Long with a smile. He walked forward two paces.

"Did Master Yu tell you what it was he talked to me about?" he asked.

"What did you talk about?"

Qian Long stared at him, and Wen returned the gaze unflinchingly. After a while, Qian Long turned his head away.

"About my origins," he said quietly.

"He didn't say. You are the Emperor, the son of the late Emperor and Empress. Everyone knows about your origins. What more is there to say?"

Qian Long breathed a sigh of relief. "That night you visited me, you must have known what the reason was?"

"Master Yu said that he had helped you once over some important matter. The Red Flower Society was short of funds and he went to ask you for three million taels of silver. But you refused the request, and have even had me seized. If I ever get out of this, I will reveal how ungrateful you are."

Qian Long laughed out loud. He glanced at Wen: his anger did not appear to be a pretence. "If that is the case, I had better have you killed," he said, half-believing him. "Otherwise, if I let you go, it could damage my reputation."