Yu Yan Chao, the SHSL Kung-Foo Master seems to be rather angry all the time. Or maybe it's just her face. However, don't be fooled by her cat-like appearance. She is rather calm and makes sure to do all things with caution and respect.  Yu doesn't like to fight when it's not necessary, she sees it as immature and childish. She's rather quiet, not usually one to speak up.  

Please try to avoid any high pitched voices. I simply do not see them fitting for this character. Your welcome to try a Chinese accent, but an American accent will do just fine as well.