What idioms are there to describe "young and inexperienced"?

Idioms describing "young and inexperienced" include inexperienced, novice, inexperienced and newborn calves.

Idiom definition:

No personnel:

Pinyin: wèi jīng rén shì?

Interpretation: Generally speaking, you have no social experience and don't understand the world. It is also related to a person's social experience. Experience is not rich, and the heart is immature.

First time in Jianghu:

Pinyin: chr Jiāng hú

Interpretation: Newcomers who have just arrived at social practice.

Juvenile hail:

Pinyin: zólóqiγnbáo?

Interpretation: describe a person as inexperienced.

Wet behind the ears:

Pinyin: SHSèwèI shn n

Interpretation: refers to contact with society, little experience in the world, and more description of young people.

Newborn calf:

Pinyin: Chinese

Interpretation: newborn, just born; Lower leg, lower leg; A newborn calf refers to a newborn calf, which is generally compared to a young person.