I had an informal training in Wing Chun Kung Fu without my Dad's knowledge or wish. I have never used Wing Chun in real life, so I don't know how effective it is to another technique. My Grandfather was a Wing Chun practitioner in China. He taught both my Dad and my Uncle. My Uncle went against my Grandfather's wish that not to use martial art to hurt people except for self defense only. My Uncle was out of work in the 50s-60s. He needed work to support his family, so he enrolled to become an ultimate fighter. There were many deathly fighting sports such as dog fight, chicken fight, kick boxing, various martial arts, illegal gambling, drug prostitution and more at the time in Vietnam especially to entertain French soldiers and foreign tourists. My Uncle died from sustained injury from many deathly fights that he had endured. The more matches he fought the more money he can earn, and also he probably thought Wing Chun was superior to other martial art styles and wanted to prove it just like Bruce Lee was. Anyhow, my Dad never taught me Wing Chun or the Chinese language and forbid anyone to discuss any martial art fighting techniques or style in the house. Until these days, I still don't understand the reason why. I don't have a good knowledge about my Dad's background except an overview from my Mom. My Dad went to Europe a few times after WWII especially to France. It took him about a month to get there on a French Commercial Ship or/and Navy Battle Ship. My Dad can speak French, and I don't how he learned the language. I still don't know why he went to Europe. For that reason, I still have not been to Europe.