Miao Dao Zhenxian

What is a true immortal? Chen Feng said this: "Invulnerable to all laws, immortal, dispersed into Qi, gathered into shape, a single thought can reach the heaven and earth, can swim in the sky in an instant, the body has all kinds of changes, the mouth contains the cause and effect of the heaven and earth, is not burdened by the world, is not bound by the heaven and the earth, should be a true immortal."