Update: I bumped into this guy last night while crossing the street. I'm not sure he remembered me but I certainly remembered him. Still very friendly and still wanting to practice his English.
I met this delightful man one day in Chao Yang Park in Nanning, China. I think he used to be an English teacher as it rare for older people to be able to speak English so well. He was a real character and had been living in Nanning for 25 years.