On April 22, the father of Tao issued a letter through Weibo expressing his feelings for his son to leave the group and return to China; due to the lack of support with regard to the developments of individual career and health problems. Tao had suffered previously several injuries, including a tendon torn in ankle, that they had not properly been treated more worsened, and had to leave for promotions for the second album by the group "EXODUS". On April 23, S.M. Entertainment released an official statement saying that they were going to be looking for a solution in the sense of development through negotiation with Tao and his father. Tao later confirmed that had left S.M. Entertainment and after failed negotiations, Tao presented a formal complaint against S.M. Entertainment on August 24 for the termination of his contract.