In Sword in Snow, why did Xu Fengnian promise Zhao Xituan to take Huang Maner back to Longhu Mountain?

In the snow, Xu Fengnian promised Zhao Xituan to take Huang Maner back to Longhu Mountain. Cause analysis:

I don't know when the two brothers will meet again. Xu Fengnian asked Zhao to take care of his brother. Old Shi Tian would say? My disciple is the most precious in the world. ? Not to mention, Zhao Xituan, an old Taoist, is really good to Huang Maner. I came to Wudang all the way, the main purpose is to collect disciples; As the largest sect in the world, Longhushan has many rules. The old Taoist priest took such a precious apprentice, went up the mountain to pick fruit, went down the river to fish, and did whatever he wanted. ? I have no rules there, and I will never wronged my apprentice. ?

Finally found an apprentice, even if you bully yourself, you won't bully him. ? Zhao Xizhen, life is like this, no wife and no children? I raised my apprentice as my own son and forced my eyes to help Huang Maner cross the sky. This generation of Shi Tian died tragically. Xu Longxiang was born with brute force, but he was a child, and he didn't know that the Jianghu was sinister. It's lucky to have this old Taoist priest. We should always protect him.

Because Huang Maner was born with divine power, some people in the northern army supported him to take power, but once Huang Maner took power, he would be used. The royal family wanted to take this opportunity to disintegrate the northern chariot from the inside, so Xiao Xu gave Xu Fengnian two choices. One was to send Huang Maner away from the northern chariot; Second, kill people who support Huang Maner in the army. Xu Fengnian doesn't want to choose either of these two options. Lao Huang knows the prince's predicament, so he is ready to open a third way for him with his life! He went to Longhushan alone to make a deal. He went to challenge Wang Xianzhi and spy on him. Dragon and Tiger Mountain promised to keep Huang Maner! I really cried. Lao Huang knows that he is old, but he only uses up his last strength.

On the one hand, he gave it to the Xu Fengnian Grand Dynasty, and on the other hand, he asked Hongxiang to take Princess Yangdi to stop it. Even the bamboo forest that doesn't like acting the most has appeared. Everyone is quite good at calculating. Everyone is very thoughtful, sensible and flexible. This play is recommended to everyone! ?