I just had a thought recently: Long Feng may possibly be a master with Neutral Jing. Why do I think this is so? Well, he seems to be taking his time with taking actions, and wants to wait for the right moment to get rid of Aang. Also, during his fight with Aang and Jet, when he strikes down Jet, he counterattacks Jet's sword throw at the very last second. Neutral Jing involves waiting for the right moment to strike, doesn't it? Well, Long Feng seems to be really good at that.
Any comments?