Look at the idiom "girl with red lips and yellow hair".

1, lips as red: red: bright red. Describe the rosy lips.

2, lips and teeth: pomegranate: pomegranate. Her lips are rosy and her teeth are as neat as pomegranate fruit. Describe the beautiful appearance.

3, white teeth and red lips: white teeth and red lips. Describe the beauty of the face.

4, red lips and jade face: generally refers to beauty.

5, white teeth and red lips: white teeth and red lips. Describe the beautiful appearance.

In fact, this answer is not too difficult. Red lips are the mouth, and the function of the mouth is to eat. Eating is the key word. Eating in this mountain, there is also a keyword mountain. There is only a little left in the highest shaft in the mountain. Why? Was eaten. Combining the above information, we can know the answer.