Find the Ring

Shi Lian sits on her study table, wondering if she should call that man or not. He hasn't called in three days and she assumes he must be waiting for her call. 

After debating for almost twenty minutes, she dials his number. Finding his number in her call logs, she calls him. The most unusual thing here is that there is no ringing sound on the other line. 

Normally, when she calls anyone, there's always a ringing sound but when she called him last time and this time as well, there's no sound. 

He finally picks the call after sixteen seconds of her waiting. "How nice to get a call from you, Shi Lian."

Shi Lian rolls her eyes saying, "I want answers to some of my questions from you." 

"What do you want to know?" he asks with a mocking tone. She can't help but get shiver hearing his creepy voice. It's as if he speaks with his nose, not his mouth. 

"How did you know my mother will tell me about the ring?"