lack of quality sanda schools outside of China ,Russia and Iran. Plus sanda trains for fighters to stay standing . Any ground techniques to be quick break the ankle or elbow groin stomp but back up .
It’s not that easy , Sanda Chinese self defense system .Wushu Sanshou is a martial art which was originally developed by the Chinese military based upon the study and practices of traditional Kung fu and modern combat fighting techniques. A Kung fu instrutor could have San shou rule set sparring, Like they did traditionally. But sanda is Kung fu based kickboxing/ hybrid MA .kung fu is a TMA .There is a ton of kung fu schools around though. The kung fu associations need to rein them all in, and tell you need to add a sanshou sparring class.
Kung fu Kwoons and local associations can always add a little TMA flair to it