In the end, given that the tree root had been described by Qing Yi and Chun Hua as most likely being a byproduct of some kind of spiritual tree, Elder Song decided to dispatch Pei Yang to go and take care of the situation, as his expertise in the Dao of Alchemy would provide him with the best idea on how to deal with a spiritual object like that. Especially given that the sect didn't really have anyone at the Dao Seed Realm specialized in the Dao of Nature or the Dao of Life. Making someone skilled in the Dao of Alchemy the most suitable for this kind of job.
The only risk was that Pei Yang was still wanted by the Blue Sea Empire and him leaving the sect could draw the unwanted attention of the Blue Sea Empire and potentially cause a full-scale conflict to break out between them.