That's what traditional kung fu does. Not movie stuff like Wu Shu (made by the communist government after they banned real martial arts). But real traditional kung fu.
Traditional kung fu just trains guys to execute only 1 or 2 combos for like 10 years straight and all they do is master executing those 2 combos. Those 2 combos will kill a normal untrained, unarmed person. So, they'll lose against a mixed martial artist. However, in a real life scenario they can quickly take out multiple people, which a mixed martial artist can not do.
MMA is for the cage. Krav Maga and kung fu are for real life.