Casey Cao is looking around in the hall, as if she's waiting for someone. Go ask her.
Casey Cao: You're back? I've been waiting for you for ages!
Casey Cao: The snow water is already ready. We must hurry on to the next step.
You: What's the next step?
Casey Cao: The next step is to find a candle with an eternal flame.
Casey Cao: When Lady Qingnu was still here, she would light up a candle if the snow beast didn't come home after playing outside.
Casey Cao: The flames of that candle never went out, even in the snow.
Casey Cao: So, when the snow beast saw the candle, it would know that Lady Qingnu was calling it home.
You: (Ms. Cao knows the legends of Lady Qingnu in great detail...)
You: (But does a candle with an eternal flame even exist?)
You: It has to be a candle with an eternal flame?
Casey Cao: Of course!
You: Ms. Cao, have you considered... that a candle with an eternal flame might not exist?
Casey Cao: No way! Lady Qingnu said it must exist, so it does exist! Don't try to fool me with nonsense.
Casey Cao: Hurry up and find it. I still need to figure out what to do next.
You: Okay, I'll try to find it.