The oldest old [m?o?di?zh?ni?n] is 80 or 90 years old. Eighty-nine years old, sound "冒", eighty-nine years old, sound "迭". Eighty-nine years old is a very old person. The age of eighty or ninety, when one is very old.

Speech from [Han] Cao Cao's "Song of Wine": "The oldest and the oldest are all able to live to the end of their lives, and the grace is wide and the grass and the trees and the insects." Sixty said Jie; Jie, refers to also. Not from the force service refers to the matter to make people also. Seventy said ninety, hair white ninety-ninety also. Eighty is said to be old; old, iron also. Skin turns black like iron. Ninety said mackerel; back with mackerel text. Or said yellow back, sideburns become yellow. The skin color is yellow, and the hair on the temples turns yellow. The color of the skin is dull, and it is always as if there is dirt on it. It is also said that the skin on the back of the face is like a chicken's beard. Or it is said that the skin of frozen pear has spots as black as the color of frozen pear. Or said old age, old age big teeth fall out of regeneration fine such as children's teeth. A hundred years is said to period Yi; Yi, raise also. The old faint no longer know the service flavor good and bad filial son period in the exhaustion of the road to nourishment and also. Old, rotten. Old and not dead said Xian; Xian, move also; move, into the mountain also, so its system of word people next to the mountain also.