Is it a unique fitness technique in Vietnam or martial arts?

No, China's Yongchun Boxing, Bruce Lee's Jeet Kune Do and Japanese karate are very popular in Vietnam. Generally, Vietnamese do not have their own martial arts, most of which are handed down from China. Women who steal their wives do many actions like yoga, which is very popular with girls in Vietnam, especially in Vietnam.

Recently, Japanese Taekwondo is also very popular in Vietnam.