On the other side of the door, Youyou stood staring silently, through the crack in the doorway, at the distraught woman in the living room. His fingertips trembled. With a sharp intake of breath, Youyou turned and leaned gently back against the side of the door with a hint of pain in his eyes.
Gong Fan had indeed disappeared for a long time, but he didn't know why. However, he did not know that his mother was so worried about Gong Fan.
She was probably afraid that he would be sad! Afraid that he'd think that her love was divided between him and Gong Fan, so she pretended to be calm, as if she was not worried. In reality, she must be very worried!
Mommy also has feelings for Gong Fan.
He even realized that during this period of time, when she would wake up in the mornings and hurry into his room, there would be a momentary but obvious hint of dejection in her eyes, when she found that it was him.