That's it? Liu Kang is one of the most enduring characters from the series, but with finishers like this it's hard to see why. It's just a spinning kick and then an uppercut. If you use it on the bridge level your opponent plummets to their spiky doom, yes, but what about every other stage? It's weak sauce, Kang.
Evidently, the developers realised their mistake, awarding Liu Kang the ability to turn into a huge man-eating dragon in later games, which is quite the consolation prize.