There are different meanings to the squint line of sight(wai xie de shi xian you bu tong de han yi )

If a squint is accompanied by a lowered eyebrow, a tight frown, or a pulled down corner of the mouth, it means suspicion, hostility, or criticism. When you express your opinions in the company meeting, if you find that most of your boss and colleagues are looking at you with this kind of vision, you have to be alert. They may have opinions on you or disdain your speech. Either way, you can't impress others.

And women usually like to use this line of sight to express their interest. At the same time accompanied by eyebrows slightly up or with a smile, that is very interested in the performance, people in love often use it as a courtship signal.

Chinese PinYin : Wai Xie De Shi Xian You Bu Tong De Han Yi