If 'turning head' stands for Senior White Two, then 'person' should be myself.
After all, I'm currently the only human Senior White Two has interacted with—since not every human has nerves as rough as mine when facing the ruler of the Netherworld Realm.
So what does 'light' represent?
"Are you ready?" Senior White Two spoke.
Song Shuhang was pondering the question, but when he suddenly heard Senior White Two's inquiry, he instinctively replied, "Ready? Oh, the light!"
Senior White Two across from him: "..."
A moment later.
"I'll grant your wish." Senior White Two replied.
The next second, several seven-colored beams of light shone down on Song Shuhang.
Song Shuhang: "???"
At this moment, Hamster revealed itself from invisibility, cheeks puffed out, paws working furiously. Seven colored rays shot out from its claws and fell onto Song Shuhang.
