chapter 816 Karin Chu’s phone number

"Spirit Fire?"
When they heard this unfamiliar term, both Hailee Ye and Sally Liu showed curious expressions.
Lewis Lu nodded and gave a brief explanation, "It's a kind of special flame."
While playfully wrestling with Sally Liu earlier, she had unintentionally said the phrase 'playing with fire.' It instantly awakened Lewis Lu to a realization.
Lewis Lu had followed the steps, materials, precautions, and fire intensity precisely as specified in the alchemical recipe....