I think this will always be the source of strength. In fact, Tai Ji Chuan is very explosive and fast, but now it is simplified, and many of them are compiled into exercises for the elderly. As for wing chun boxing, I don't know, but I think my master has played it, and it's ok to bunt in melee, but I feel that it may be wrong to practice it and there is no explosive force. Exercising abdominal muscles all the year round is often suppressed by Thai elbows and flying knees. I hope I can help you. I heard that karate is very effective in actual combat. You can have a look.