A Gift from the Other Side of the Flower

This is a continent where spiritual energy is getting thinner and thinner - Gulin Continent. And he was an orphan, adopted by an old man, and trained to be a cold-blooded killer; the terrifying blood thunder struck him and his mortal enemy. They traveled to the present world and worked hard to become the strong man in this world - the Po Man, the transformation of a cold-blooded killer... His name used to be Gu Feng, but now is he called Nangong Junmin or Gu Feng?