Family and friends think they're mad not to retire, but Li Songshan and Han Rong are busy with an African culture center inspired by a lifetime in Tanzania and a collection of Makonde carvings. Meng Jing describes their amazing life on another continent.

Li Songshan is thinking about the 12,000 pieces of African art he and his wife spent more than 30 years collecting, before handing them over to a museum so others could enjoy the art they love: "It was like marrying off our own daughter. It's hard but you still want her to end up with someone good, someone who deserves her."

Li, 71, and his wife Han Rong, 68, have a lot more behind them than just that art collection - they have their relationship with the African continent that began about 50 years ago.