old man killed himself for star's duty or girl'sfilial duty?

07/03/27,an old man ,a farmer in Sanmenxia,and his daughter lijuan yang,went to HONG KONG to meet her idol---dehua liu,a famous music star in asia.it is unfortunate that the old man committed suiside in river afte liu refused their demand that his daughter wanted to chat with liu in the private eye.
many chinese medias attribute the unfortunate event to this girl'ssfilial duty.the reason is that old man had raised travelling expense by selling his kidney .