After the selection competition in the Holy Land, Zhou Yuan and Yaoyao went to Cang Xuan Sect. To join the sect, one must first become an outer mountain disciple, and then participate in the mountain selection ceremony. According to the results, they will choose the seven peaks of Cang Xuan and become formal disciples. Zhou Yuan and Yaoyao became first-class disciples in the outer mountain, and resolved the enemies' deliberate difficulties one by one, showing their strength. At the same time, they became friends with Shen Wanjin, Gu Hongyi and others. In the mountain selection ceremony, Zhou Yuan defeated all the geniuses and won the first place. But what shocked and puzzled everyone was that Zhou Yuan chose Shengyuan Peak, the weakest of the seven peaks of Cang Xuan. This is because when in the Holy Land, the former master Cang Xuan Laozu guided Zhou Yuan to Shengyuan Peak to find the second holy pattern of Cang Xuan Holy Seal. Shengyuan Peak is short of resources. In order to obtain cultivation resources, Zhou Yuan took the initiative to participate in the qualifying competition of Ziyuan Cave Mansion. After obtaining the qualification for the cave test, he went to Yuanchi with Yaoyao to practice.