 Mao Xiaobing later realizes that she has been watching over her parents, and after tracking down the old couple, he asks why Ling-Ling is now deaf.Recalling the events, Pan explains that Bing-Bing (Ling-Ling's younger brother) had lied to their mother to get Ling-Ling out of the house.Both of them then went up to the rooftop where she and Mao Xiaobing would watch the movies through his binoculars.