Why is Xie Xun not grateful to Zhang Wuji who once saved his life?

In the novel "The Legend of Heaven and Dragon Sword", Xie Xun's fate is considered tragic. He was killed by his master Cheng Kun when he was young. In order to force Cheng Kun to show up, he chose to kill innocent people indiscriminately and put the blame on him. After finally getting the dragon-slaying knife, he lost his sight and lived on the Ice and Fire Island. Later, he was deceived by Granny Jinhua to return to the Central Plains, and the dragon-slaying knife was deceived by Zhou Zhiruo. Then he was kidnapped by Cheng Kun and imprisoned in Shaolin Temple. Later, I saw through everything and chose to become a monk. Although Xie Xun's fate was rather tragic, it was a blessing among misfortunes that he became a brother with Zhang Cuishan and accepted Zhang Wuji as his adopted son.

When Zhang Wuji learned that Xie Xun was trapped in the Shaolin Temple, he refused to marry Zhou Zhiruo and risked his life with Zhao Min to go to the Shaolin Temple to rescue him. He disguised himself as a farmer and learned that he was trapped by the three Shaolin monks. He still risked his life to break through the Vajra Demon Circle of the three Shaolin monks. Let’s talk about the Three Monks’ Diamond Subduing Demon Circle, which almost cost Zhang Wuji all his life’s energy. The original book describes it this way: “The three eminent monks had never encountered such a powerful opponent in their lives, and they were all shocked. But they didn’t know that Zhang Wuji could resolve these three moves and nine moves. , He has actually tried his best in his life, using the ups and downs of the pine branches to secretly smooth out the chaos in his Dantian."

If he continues to consume like this, Zhang Wuji's life will definitely be in danger. Fortunately, there were so many people fighting for the dragon-slaying knife, and eight more people came to sneak attack, so Zhang Wuji was free to rescue Xie Xun. At this moment, Xie Xun was extremely reluctant to leave. The fighting scene outside was very bad. Xie Xun wasted his life here regardless of Zhang Wuji. Why was this happening? In the original work, Xie Xun replied: "My child, the biggest sin in my life is to kill Master Kongjian. If your foster father falls into the hands of others, he should fight to the end, but today he is imprisoned in the Shaolin Temple, and I am willing to be killed. "It's worth the life of Master Kongjian."

It can be seen from his words that Xie Xun is ashamed of Master Kongjian, so he is willing to be imprisoned by Shaolin. This seems reasonable on the surface, but is actually unreasonable. If you were ashamed of your ignorance, why didn't you come to Shaolin and surrender early, instead of repenting after you were caught? In fact, Xie Xun knew that Zhang Wuji could not defeat the three Shaolin monks. If they were forced to kidnap him, the two sides would fight to the death. Instead of doing this, it would be better for Zhang Wuji to give up his desire to rescue and leave early to save his own life. This is Xie Xun's kindness. Be careful.