Opportunities in the Ice City

I looked at the time, it was one o'clock in the morning.
Egbert Zhang replied to Han Yarou: "Why haven't you slept yet?"
"I Can't Sleep (Lost)"
Han Yarou replied to Egbert Zhang's message in seconds: "I don't feel safe without you by my side (sad)"
"Silly girl."Egbert Zhang replied to Han Yarou, "Go to bed quickly. You and uncle have an important mission tomorrow."
Han Yarou was a little surprised: "What important task?"
"You'll know tomorrow. Go to sleep and stop tossing...