Along with Morten Frost (Denmark), Liem Swie King (Indonesia), Prakash Padukone (India) and his teammate Luan Jin he was one of the world's leading players in that era, known for his cool and steady play. In China he is nicknamed "sticky candy" (牛皮糖), owing to his much-used tactic of using long rallies to pressurize an opponent into making mistakes. Han won the 1985 IBF World Championships beating Morten Frost in the final. He also won a bronze medal at the 1983 IBF World Championships and played singles for China's world champion Thomas Cup (men's international) teams of 1982 and 1986.