What is the eight-character idiom formed by Xian?

Elegant manners: elegance. Describe a woman's posture and elegance.

Famine recommends starvation: famine; Recommendation: Come one after another. The famine lasted for many years.

Rows are closely arranged, just like the teeth of a comb and the scales of a fish.

A hundred blessings come true [explanation] describes all kinds of good luck coming together.