Chinese Multiplication Table
description: The Chinese multiplication table is the first requisite for using the Rod calculus for carrying out multiplication, division, the extraction of square roots, and the solving of equations based on place value decimal notation.
creator: Fuxi
date: Five Emperors
contributor: N/A
type: Physical Object
coverage: Chinese mathematics

The Nine Chapters on the Mathematical Art
description: The Nine Chapters on the Mathematical Art is a Chinese mathematics book, composed by several generations of scholars from the 10th–2nd century BCE. Calculation towards ratio, area and volume were discussed in this book.
creator: Unknown
date: Han Dynasty
contributor: Zhang Cang, Geng Shouchang, Liu Hui, Li Chunfeng, Jia Xian, Yang Hui, Li Huang
language: Chinese
type: Text
coverage: Chinese mathematics

Nodular Cast Iron
subject: Iron casting technology
description: In 1981, China's ductile iron experts used modern scientific methods to study 513 pieces of unearthed ancient Chinese iron tools. It was determined through massive data that spherical graphite cast iron appeared in China in the Han Dynasty.
creator: unknown
date: Han Dynasty(206 BC–220 AD)
relation: Frying Steel and extremely fine steel technology
format: Production method
type: Skills
coverage: Weapons and tools

Chinese Abacus
description: Chinese abacus is a tool for calculation. In the abacus, there are two beads on each rod in the upper deck and five beads on each rod in the bottom deck. This configuration is used for both decimal and hexadecimal computation. The beads are usually rounded and made of a hardwood. The beads are counted by moving them up or down towards the beam. The suanpan can be reset to the starting position instantly by a quick jerk around the horizontal axis to spin all the beads away from the horizontal beam at the center.
creator: Unknown
date: Five Emperors
contributor: Di Shou
relation: Supplementary Notes on the Art of Figures
type: Physical Object
coverage: Chinese mathematics