Excuse me.

That Prince Dan of Yan, who stayed in Qin as a mortgage, had already fled back five years before Duke Jia of Zhao became the King of Dai. Prince Dan knew that the king of Qin was determined to annex the kingdoms and had repeatedly invaded the state of Yan and taken away its lands. He changed his clothes into rags, smeared his face with mud, dressed up as a poor man, and went to work as a servant for others. In 232 B.C. (the 15th year of King Qin's reign), he got out of the Huang Pass and ran back to Yan. He hated the king of Qin and was determined to take revenge for the state of Yan. However, he did not start by developing production, or training his troops and horses, nor did he want to contact the lords to fight against Qin. He thought that he could not do all these things, but just put the fate of Yan on the assassin. His ability could be imagined. He took all his belongings to buy people who could assassinate the king of Qin.

At that time, there was a murderous criminal named Qin Mayang. Prince Dan admired him for his courage and rescued him and took him under his tutelage. This time, Prince Dan's reputation for treating warriors well spread throughout Yan, and even Fan Yuqi, who was hiding in the deep mountains of Yan, knew about it. He was the general who had incited the rebellion of Chang'an. He boldly came out to join Prince Dan. Sure enough, Prince Dan took him in and treated him as his guest, building him a house called Fan Gongguan on the east side of Yi Shui [originated in Yi County, Hebei Province].

Prince Dan's tutor, Ju Wu, advised him, "Why do you take in the enemies of the king of Qin when the kingdom of Qin is annexing the lords? I think it is better to ask General Fan to hide in Xiongnu, and we will contact Qi and Chu. In this way, we may be able to resist Qin. Now, instead of making friends with the lords, you are honoring the enemies of the king of Qin, which is not urging Qin to come quickly?" Prince Dan said, "Your plan is good, but I don't know how long it will take for the lords to unite. My heart is frying like oil, how can I wait? Besides, General Fan only came to join us at the end of the road, how can I send him to the wilderness? He lives here, we will not spread the word." Ju Wu said, "Yan is so weak, Qin is so strong, how can we compete with others? A chicken feather thrown in the fire, is not a blaze will be finished? If you take a chicken and smash it against a rock, there is no reason why it won't break. I simply can't think of an idea." Prince Dan said, "Please think of another way, sir." Jiu Wu closed his eyes, shook his head, and stayed for a while, he said, "There is a Boss Tian Guang who is shrewd and courageous. The prince wants to take revenge on Qin, he may have a way."

Prince Dan then asked Ju Wu to go and invite Tian Guang, and he waited in the palace. In a short time, he saw Ju Wu bring Tian Guang here. Prince Dan hurriedly went over and personally helped Tian Guang out of the car, welcomed him into the inner room, knelt, and personally dusted his mat, and invited him to sit down. Tian Guang swayed with his back and came to sit down. Prince Dan knelt in front of Tian Guang and said, "Nowadays, Yan and Qin cannot coexist. I have long admired your wisdom and bravery, can you use your mind to think of a way to save the state of Yan?" Tian Guang said, "An old man is worthless. An old horse is not as good as a dog! He only knew Tian Guang as a young man, but he didn't think that I was old now." Prince Dan said, "Among your friends, there are always people who look like you when you were young." Tian Guang said, "It's too difficult, too difficult! There is one person, but I don't know if he is willing to contribute." Prince Dan hurriedly asked, "Who is it? If there is such a person, I must ask him to help." Tian Guang said, "This man is Jing Ke, a swordsman. He is a swordsman, and his courage and wisdom are many times better than mine." So Prince Dan begged Tian Guang to invite Jing Ke to come. Tian Guang agreed to do so.