Su Qi's question had no answer.
None among Qing Qishu's group could clarify what caused the "Night Attack."
Not every question has an answer. Some people spend their entire lives just chasing a possibility.
For the Holy Tribe, survival had become increasingly difficult; the "Night Attack" was just one of the unsolvable problems.
...
"That outfit, I recognized it at a glance."
"I knew we would get separated after entering, but I didn't know she wouldn't be able to find me."
"She's very good at finding people."
"The Forest sea source realm is too vast. I searched all day yesterday and found nothing. Then I encountered the forest bear. I stole its honey—that was honey, right? Very sweet. She would have definitely liked it; I put it in the box! Where was I? Oh, the bear, that bear, it just kept chasing me, chase and chase..."
"I wanted to come out and look for her last night, but I couldn't get out."