Many people make the claim the kung fu can be differentiated from MMA in that it trains for the no-rules environment of “the street”, while MMA is concerned with training for the limited, rules-based venue of the sport.
“The street” contains many uncontrollable variables, such as multiple opponents, weapons, uneven footing, and a variety of potential physical obstacles. The sport version of MMA is much more controlled environment that can be anticipated to a greater degree beforehand.
Most people would agree that to get the most out of your training, you must spar. For those who train for "the street, how often do you spar with and against weapons? Multiple opponents? Multiple opponents with weapons? What kinds of weapons do you spar with and against? What kinds of mixes do you use with mutliples? 2 on1? 3 on 1? 2 on 3? 3 on 5? What kinds of weapons do you throw into the mix?
For those that do spar, how do you keep the injuries down? How do you make it realistic?
What are the things you have learned from your sparring experiences?
How does the environment affect your ability to fight multiple and/or weapons wielding opponents? Do your specific techniques change when facing multiple opponents and/or weapons? Do your tactics change? Does the mix of how important technique vs. strategy is change? What happens when it is you, rather than your opponent, who has the advantage either in terms of weapons or numbers? How do bladed vs. blunt edged vs. projectile vs. firearms weapons change the tactics and techniques?