Qi Xi vaguely remembers:
After washing her hair, Qi Nun leaned against her brother.
Qi Xi: "Don't touch me if your hair is wet."
Qi Nun: (blinking eyes) "Brother..."
Qi Xi:... (I gave in to someone who said he was too honest)
Qi Nun: "Brother is the best~" (due to my own brother)
Purpose: Cherish life