Claim: Lu Xiaofeng is a fictional character that has been part of many television adaptations such as The Return of Luk Siu-fung in 1976, Master Swordsman Lu Xiaofeng in 2000, and Detectives and Doctors in 2014.
Evidence: The Return of Luk Siu-fung is a 1986 Hong Kong television series adapted from Gu Long's Lu Xiaofeng novel series. 
1986 See The Return of Luk Siu-fung