Use micro words, such as micro distance.

Du weizi,

Yu Wei,

Neutrinos,

Micro farad,

Wei Zi province,

Micro-mom,

Microcomputer,

Mi gu,

Jia,

Smile circle,

Micro-operation,

Weishan lake,

Microfilm books,

Cuiwei Palace,

Microscope,

Microbes,

Microprogram,

Calculus,

Ziweilang,

Wei Zi Palace,

Purple order,

Ziwei Garden,

A speck of dust,

Smile,

Microvessels,

Microwave oven,

Differential calculus,

microfilm