HAIKOU, Sept. 17 (Xinhua) -- When Dr. Timothy Stephens arrived in south China's Hainan Province in 2013, he didn't expect patients there to bring him mangoes from their gardens, fish their husbands had caught, or mooncakes they had baked at home, to express their gratitude.

"It's very endearing," said the 46-year-old American physician. "They want me to participate in the local culture."

Known in China as S