Mo Hai had the ability to sense the true intent of the flames of others.
The more others used their flames to burn him, the more enlightenment he would attain. The higher the level of flames, the more exhilarated he felt. The flames of the Vermilion Bird Tribe were extremely pure and presented a perfect opportunity for him to further himself in his dao of fire. Thus, he was quite pleased to have such a violent supervisor.
Mo Hai was burned by the flames, but he did not use his power to snuff out these flames and instead let them snuff out on their own. Such a sincere attitude in accepting his mistakes make Huang Muzi very pleased.
This was probably the definition of a win-win situation.
Mo Hai continued to mine for crystals, and whenever he needed a dose of fire, he would intentionally make a mistake.
Huang Muzi would then burn him with rage.
He would then be satisfied and continue to mine for crystals.
This was a positive loop.
