Zuo Youtang knew that Zuo Youqun had made a mistake in dispensing medicine for Tie Wandao. During the period after Zuo Youqun's dispensing went wrong, he was often in a panic, for fear that others would know. He couldn't help but tell Zuo Youtang about it, and told her not to say it, if she said it, the patriarch would definitely kill him.

But this matter was known by Qiao Anbo before he told Zuo Youtang, and Qiao Anbo used this as a handle to let Zuo Youqun do things for him. Because at that time, there were already many people in the Tiecang court who believed in Zuo Youqun very much, so Qiao Anbo used Zuo Youqun to do things easily. But at that time, he didn't let Zuo Youqun do anything harmful to others. At first, he thought about sending Zuo Youqun to study the detoxification method for his sister Qiao Guangchong, but he felt that he was very comfortable using Zuo Youqun, and there were other things to continue to use him, so he used Zuo Youqun's mistake in dispensing medicine for Tie Wandao as a handle to talk to Zuo Youtang.

Zuo Youtang cared about Zuo Youqun's safety, and agreed without much thought, and the two also said that they would not tell Zuo Youqun about where she went.

Therefore, Zuo Youqun, who was watching the carriage disappear in the twilight rain at that time, didn't know where Zuo Youtang was going, but knew that she was going to a far away place, and she would go for a long, long time.

After Zuo Youtang left, Qiao Anbo left the Tiecang clan for many years because of other things, and he found a doctor for Qiao Guangchong from other places in those years, so Zuo Youqun did not continue to be used by Qiao Anbo in those years.

Many years later, Qiao Anbo returned to the Tiecang tribe, often secretly helping Jian Liang with things and obtaining heavy money from Jian Liang. After Tie Hongyan was injured, Jian Liang asked him to find a doctor who everyone believed in to poison Tie Hongyan's medicine, and he thought of Zuo Youqun.

He first found Zuo Youqun, and after learning that Zuo Youqun had gone to look for his sister Zuo Youtang many times but couldn't find it, he told him that he knew Zuo Youtang's whereabouts. Zuo Youqun didn't believe it at first, so Qiao Anbo asked his sister Qiao Guangchong to give him the items that Zuo Youtang had taken away back then, and he showed them to Zuo Youqun until Zuo Youqun believed it.

Zuo Youqun asked him where Zuo Youtang was, and Qiao Anbo said that if he wanted to know her whereabouts, he would make an appointment to meet in the woods.

Qiao Anbo saw him in the woods, handed Man Tan to him, and gave him the task of poisoning the young patriarch, as soon as he heard that he was harming the young patriarch, he immediately waved his hand and shook his head to say that he couldn't do it.

Qiao Anbo said proudly: "Your sister's life and death are completely controlled by my sister. There is another thing I haven't told you yet, your sister agreed to be taken away by my sister because you made a mistake in dispensing medicine. Of course, Qiao Anbo didn't forget to tell Zuo Youtang about not telling this matter, but he felt that it would be better to make use of Zuo Youtang after saying it, so he didn't care what he said back then. He continued: "If you refuse to do this, or reveal the task I have given you, then I will definitely tell you about it, and your sister will leave for you in vain, you have been wronged for so many years in vain, and you will be killed by the patriarch, and, I can assure, your sister's life will be lost!" If you agree to do this, and keep it a secret for me, I will not only continue to keep it a secret for you that you made a mistake in dispensing, but I will also leave a way for your sister to live, and I will also give you this money! With that, Qiao Anbo stuffed the money to Zuo Youqun, turned around and left.