In "The Condor Heroes", why did Master Dead Wood ban Li Mochou from coming to Lujia on 15? Why is the number 15?

It should be ten years. It was supposed to be like this. Lu Zhanyuan moved on and abandoned Li Mochou. Wu Santong disapproved of the marriage. He thinks that Lu Zhanyuan has bewitched his adopted daughter. At that time, it was a patriarchal society, and Jianghu people paid more attention to affection and righteousness. Therefore, Lu Zhanyuan's behavior is not commendable in depth. In this way, it is reasonable for Li Mochou and Wu Santong to make trouble when Lu Ruan got married, but their wedding is just around the corner (Li has a reason, too. A person has a personality problem and a mental problem, so it is hard to say that he is pregnant. Another guess is that Ruan Jun was pregnant, so the monks in Dali Temple stopped them. Ten years can make the next generation (Cheng Ying) born without parents. This is also a kind of humanism. It's right to seek revenge after ten years. This is my own opinion.