A man in China is donating his stem cells to a seven-year-old boy in the UK, in what is being seen as a medical miracle. Shanghai-based driver Jiang Yongfeng registered for a stem cell registration drive through his workplace, thinking little would come of it.
Shortly after, he received word that his stem cells had been matched to a boy in England.
A match between someone living inside China and another living outside China's borders is incredibly rare.

Source... http://m.bbc.com/news/world-asia-30885213