Chicken fillet, chicken breast.

"Liu" is a special word for Chinese food, used to refer to shaped pieces or slices of meat, with clear lines visible. What can be called "willow" is generally a place that has a moderate amount of exercise, such as pork tenderloin and beef loin. If you exercise too much, your muscle fibers will become thicker; if you exercise too little, your muscles will become loose. Chicken is an exception because the muscle fibers of chicken are inherently thin, so it is the breast area that receives the most exercise.