Think carefully about the country and measure the people’s livehood. As an both ancient and developing cause, “metrology” emerges with the development of social production and science and technology, and the metrology of modern society has far exceeded the scope of weights and measures, also metrology plays an increasingly important role in various fields of national economy and people’s livelihood. How to understand the past and present lives of metrology? This course will take you closer to the modern metrology industry in China, and elaborate on four parts: Approaching Metrology, Ancient Chinese Metrology, Modern Chinese Metrology, and Contemporary Chinese Metrology. It will help you understand the development history and important position of metrology in both ancient and modern China and abroad, especially the modern metrology industry serving the country’s economic and social development.