Dr. Yiu-Kang Hsu completed his doctoral degree in archaeological science at the University of Oxford in 2016. His thesis investigated the dynamics of metal supplies in prehistoric Eurasian steppe during the Bronze and Early Iron Ages. His research areas include modern day China, Mongolia, Siberia, and Kazakhstan. He is particularly keen to explore the chemistry of ancient copper-alloy artefacts and use it as a proxy to discuss human engagement with metal. A wide range of instrumental techniques is employed to serve this purpose, such as electron microscopy, X-ray fluorescence spectrometry, and mass spectrometry. Dr Hsu is now a postdoctoral researcher at the DBM, working for the ReSoc project (Resources in Ancient Society). His current interest lies in the development of metallurgy in ancient Mongolia and North China, and the interaction between mobile pastoralists and settled agriculturalists.