WEBHui Ka Yan (Chinese: 许家印, or Xu Jiayin in Mandarin Chinese; born 9 October 1958) is a Chinese former billionaire businessman. He is the chairman of the board and Communist Party secretary of the Evergrande Group, a Chinese real estate developer. The Guangzhou-based company was China's biggest property developer in 2016, based on sales volume; revenue was 211.4 billion yuan (US$31.8 billion).