Mo Wuji had a fragment of the Darkwood. As long as he was able to find the Soil of Breath, he would be able to head to the Dark World to bring life to the Darkwood. The Darkwood contained Dark Laws so once he could bring life back to it, it would be extremely beneficial for his Grand Dao.
Xi Nianmo nodded convincingly, "Yes, it is the Soil of Breath. Besides the Soil of Breath, there is also another treasure. However, that treasure was given to Qi Qian. The Soil of Breath was sealed up by my father using the seals of the historical remains itself. Only my father or anyone with the Xi Clan's blood will be able to open up that seal. The pity is that because my father got into trouble, I have no idea where the seal imprint is…"
Xi Nianmo stopped talking because there was no longer a need for her to say anything. She realised why Fei Daoren was trying to lure her somewhere.