A crane with childlike innocence means a crane with feathery white hair and a ruddy face like a child, which describes the good looks of the old people.

From Tang Tianying's "Sleepwalking in the Louvre", a word to describe a person's good looks was originally intended to describe an elderly person's energy. If we see an old man with white hair like a crane feather and ruddy face like a child, we can describe him with a crane hair and a child's face.

Idioms describing appearance are as follows:

1, radiant: radiant face, this idiom comes from (singing and playing the flute), which describes people's health and energy, giving people a very healthy state.

2, full of energy: a person is full of energy, standing on him can feel an upward vitality, which is just the opposite of mental malaise. This idiom comes from Wensongshi Daoyuan (Deng Chuanlu, Jingdezhen, Yu 'an Zen Master, Guangqing Temple, Hangzhou).

3, majesty: a person's temperament and tolerance is obviously different from the average person, then we use this word to describe him. It can also be used to describe plants that are vibrant, leafy and full of vitality. This idiom comes from (Cong Shan talks outside the iron).

4, thin eyebrows: beautiful eyebrows, describing people's appearance is very delicate and not tacky, from Yuan Anonymous (contract literature).

5. Good looks: He is handsome and personable, and comes from Guan Hanqing (Wangjiangge) in Yuan Dynasty.