Nine Yang Divine Skill?

Zhang Wuji, Xie Xun, Zhou Zhiruo, Zhao Min, Xiao Zhao, along with Happy, who should not have been part of the group, stayed in a mountain cave that was not very wide. A thatch was placed on the ground, and there was a table and a few chairs placed on it. Perhaps Xie Xun had already gotten used to living in caves, for he had intentionally moved there from the bamboo house Golden Flower Granny had prepared for him. 

The six people stayed for one day and two nights in the mountain cave. 

Even though Happy was the center of the quest, when they were in the cave, it was clear that Zhang Wuji was the main character among the six!

Once Xie Xun was certain of Zhang Wuji's identity, he became extremely loving and constantly seized Zhang Wuji's hand to have him talk about everything that had happened after he returned to China. The old man and the teenager talked to each other while weeping.