Having only trained using the True Demon Technique since the beginning, the only Qi Bai Long had inside his body was Yin Qi.
Therefore, once he entered the Sage Realm he could use that very Yin Qi in many ways outside of his body.
One of the easiest ways he could use it was by creating ice.
He did this by freeing the moisture in the air around and turned it into ice.
After all, the element of Yin was something which other than Shadow and Evil was the coldest element in existence.
Thus, being able to freeze wasn't just limited to the water.
After testing it out, Bai Long found that he could literally freeze every single item he touched. And this even included putting out a fire by turning its surroundings cold.
