My Beloved Bodyguard (2016)

"Retired military officer Lao Ding (played by Sammo Hung) lost his granddaughter due to "amnesia" and returned to his hometown feeling guilty. The little neighbor girl Chunhua (played by Chen Peiyan) becomes his comfort. But the girl's father (played by Andy Lau) accidentally got involved in a fight between local gangs. Lao Ding stepped forward to rescue Chunhua, and also found his share of responsibility..."