Lin Wu had known that the true person behind the Frozen Cliff division was none other than the Supreme elder of the Frozen Cloud sect. He was the one who had originally had the conflict with the patriarch.
Both of them were the contenders for the position of patriarch, but he had not been chosen in the end. But even then, he showed that he had talent and managed to reach the position of the supreme elder.
He was the second strongest person in the sect, being at the Dao Treading realm. Though some people also had thoughts that the supreme elder was possibly stronger than that too. There were often rumors and people wondered who was truly stronger between the patriarch and the supreme elder.