Chapter 426 - Strong Foundation

"One zhang equals ten feet, and one foot equals ten inches. The dimensions are fixed, so take the three inches and round it off to one meter. One meter equals ten decimeters, one decimeter equals ten centimeters, one centimeter equals ten millimeters, one millimeter equals ten decimillimeters, and one decimillimeter equals one hundred micrometers. Although the decimillimeter and micrometer seem very small and are not widely applicable, let's set it down so it can be a reference in the future…"