颜值 (yánzhí): the literal meaning is the value of a person’s face, but in this instance, we use it to mean the rating of how attractive someone’s face is. Literally, “颜(yán)” is an ancient Chinese of “脸（Liǎn）”, which means “face”, and “值(zhí)” stands for “value”. The hot phrase “yán zhí”is used to indicate a person's level of attractiveness, referring specifically to the face, in other words, the extent of good-looking.
颜值高 (yánzhí gāo): pretty, handsome, stunning.
Pinyin: Xīn lái de shíxí shēng yán zhí hěn gāo.
English: The new intern is really good-looking.
Not only for men or women, you can also use it to describe that something looks really pretty.
Pinyin: Wǒ mǎi tā, jiùshì yīnwèi yán zhí gāo.
English: I bought it, because it looks so pretty.