C518 Lost!

These past few days, with nothing much to do, she picked up a couple of books on prenatal care, hoping to learn more and eventually have a healthy, smart baby. She got so engrossed in reading earlier that she lost track of time. Pulling out her phone, she said, "I'll call Gu Rui to see where they are."

Surprisingly, no one answered Gu Rui's phone. He usually picks up quickly