his grandmother, who lives in a first-floor apartment below Wong.

 He would come, knock on the door to say good morning. His grandmother loved him,  said the aide.

 The grandmother doesn't know,  she added.  I didn't tell her. 

The aide described Wong's mother as  a good mother who took her son to the park. 

Wong's father shared a birthday with his son, turning 62 on Wednesday, according to police.