Chapter 2150: This question is well asked (4)

Under Master Zhang's command, various coloured flames were instantly lit.

The guests in the spectator seats all gasped at the same time.

Looking down from their angle, various kinds of flames were like stars shining brightly which looked extremely eye catching and many of them had never seen other flames other than open flames so this time round, being able to see so many was an eye opener for them.

Huang Yeuli casually swept a glance around and discovered that the flame which everyone used were different but most of them used spiritual flame.

The quality of the flame, from the highest to the lowest was, deviant flame, spiritual flame, open flame and such.

Open flame was the flame which ordinary people used when they cooked and didn't have any additional aid towards refining pills whereas although deviant flame was powerful and good to use, but it was hard to subdue and most low ranking Pill Masters mostly used spiritual flames.