The Yan Jiwang Laboratory is engaged in ultra-precision machining technology at the nanometer scale—one-billionth of a meter. Its research is applied to the production of high value-added products in fields such as optical devices, semiconductors, medicine, and aerospace. This video introduces the Yan Jiwang Laboratory, which continues its research under the theme of "contributing to social sustainability" while developing measurement technologies to enhance machining accuracy and control technologies for machine tools.