那英
Season four's advisors are G.E.M. for Team Wang Feng, A-mei for Team Jay, Li Jian for Team Na Ying and JJ Lin for Team Harlem. Continuing with the format used in the previous seasons, coaches of the other teams and the respective team advisor were allowed to provide recommendations to the team coach on who they should advance to the next round. However, the recommendations would not have an effect on the outcome of the results as the final decisions lie solely on the team coaches themselves. Artists who won their battle will advance to the Knockout rounds.