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After opening the door, the little one quickly started crawling upstairs on hands and knees. Upon reaching Liu Fengsheng's door, the child pounded on it with tiny fists while crying and calling out, "Sister Tingting, Sister Tingting."
The child often played with Tingting, and many times Tingting would bring them to her house to play. So the only person the child could think of was Sister Tingting.
Liu Fengsheng and his daughter were still awake; Tingting was in the living room watching TV with the volume turned up high, laughing so much that she was rocking back and forth on the couch. Liu Fengsheng was in his own bedroom, finishing up work he didn't complete during the day.
Liu Fengsheng thought he heard a faint knocking sound from inside the room and called out to Tingting outside, "Tingting, is someone knocking at the door?"
