BTW, Talking to my former Mainland Chinese close friend the other night, I learned that Sun Tzu is pronounced:
Sooen Tzu
or
Swen Tzu
I don’t recall which tones. Maybe someone can do the Pin Yin better or the pronunciation better and add the tone numbers.
Red Cross Boxes: https://m.youtube.com/watch?v=LZIizLVlZp8