The methodology of The Zen is to have people uncover enlightenment by themselves. Though the great awakening can be realized only by oneself, the guidance from a good friend or teacher (Kalyānamitra,善知識) who leads one to the Buddhist way is equally important. This study discusses the categories of good friends/teachers in Platform Sutra of Dunhuang Manuscripts, as well as the roles they play in one's great awakening process. This study also takes Huineng's uncover enlightenment journey as example to feature the relationship between a good friend/teacher and people in their great awakening process.