Elderly person falls, why does no one offer help

Background: Yesterday, at the intersection of Liuyi North Road and Hubei North Road in Fuzhou, an old man in his eighties fell on the sidewalk. Among the five or six onlookers, no one came to his aid. When two women attempted to help him up, a "well-meaning reminder" from a bystander made them hesitate and withdraw their hands. The old man lay alone on the cold road until he passed away.

Similar incidents: In January this year, an 85-year-old man stumbled and fell on the Southern Song Imperial Street in Hangzhou's Gulu area and lay on the ground for nearly 20 minutes without anyone coming forward to help him up; In February, an elderly person fell on the ice in Fushun, Liaoning, and more than twenty people surrounded the elder giving advice, but no one actually helped him up; In November, a seventy-year-old elder fell on Lianfang Road in Handan, Hebei, and during the half-hour that followed, passers-by ignored him. When a brave and warm-hearted taxi driver stopped his car to offer assistance, the elder said heartbreakingly: "Rest assured, I won't blackmail you." In December, a 78-year-old Shenzhen elder named Xiao Yusheng in his residential neighborhood...