Sanda and Yongchun are both awesome.
Seriously, it's amazing. Why do you say that? First, Sanda is a kind of free boxing, strong and powerful. Second, Yongchun boxing is short and dangerous, and it is extremely fast! To sum up, no matter what kind of boxing martial arts has its own uniqueness, so your question is a little short, hehe, but I don't want to answer you like that. After all, I am also a martial arts person. China Wushu is profound, there is no best, only the essence! Thank you for your communication. Goodbye.