Initially nicknamed "Doctor" after Dr. J by his American coach, John Nealon, due to his jumping ability, Cheng Chih-lung subsequently derived another nickname, "the Loach-Dragon" (泥鰍龍), from his shrewd playing style.
Initially nicknamed "Doctor" after Dr. J by his American coach, John Nealon, due to his jumping ability, Cheng Chih-lung subsequently adopted another nickname, "the Loach-Dragon" (泥鰍龍), which reflects his adeptness in playing the game.