Mortal Wick, Igniting the Lamp

Help! My cheat not only has a foul mouth but also demands I beg him! On the surface, I'm a five-color pseudo-spiritual root handyman who can't even light a testing stone. Behind the scenes, I'm the master of thirty-six heavenly flames (and his errand boy). While chopping wood in the back mountain, I encounter a terrifying second-tier demon beast, and the prodigy Zhao Ling'er despairs of survival. Lu Ran slides in, grabs its crotch, and kills it instantly with true fire. Zhao Ling'er's heart is secretly given, and the younger brother Zhou Meng is in awe. The old man (tsundere face): 'Call me Venerable, or I won't help you next time.' Lu Ran (rolls eyes): 'No way, we'll die together.' In the end, one person and one remnant soul, while sabotaging each other, blow up the cult's lair. The villain panics: 'Who are you?!' Lu Ran smiles slightly: 'A woodcutter from Yunlan Sect, known as—the strongest fire poker!'