Liu Ying and Lu Jian had just finished grilling the meat when they heard someone knocking on their door. The two were a bit puzzled, wondering who would visit at mealtime?
Lu Jian went to open the door and saw an elderly woman with white hair but dressed neatly with a scholarly air, along with a little boy who looked about seven or eight years old, as thin as a skeleton, with a tiny neck and a big head.
Lu Jian recognized this elderly woman as a neighbor living upstairs, a university professor who is now retired and at home caring for her grandson. He didn't know her name, only her surname Zhang. Because she looked young, the younger people in the building called her Aunt Zhang, while those of the same age called her Professor Zhang or Old Zhang.
