Ma Xiaoxiao, Researcher, Tenured Associate Professor and PhD Supervisor, Department of Precision Instrument, Tsinghua University; Deputy Director of the Institute of Instrument Science and Technology. He serves as a committee member of the Mass Spectrometry Division and the Medical Mass Spectrometry Division of the China Association for Instrumental Analysis. His research focuses on mass spectrometry instrumentation and its biomedical applications, with an emphasis on high-throughput, high-coverage lipid structural annotation technologies for single cells and biological tissues. He has published more than 60 papers in journals including Nature Communications, PNAS, and Accounts of Chemical Research, and contributed book chapters to three monographs published by Springer and the Royal Society of Chemistry. He is an editorial board member of journals such as Chinese Chemical Letters and Journal of Analytical Testing. He has led the Young Scientist Project of the National Key R&D Program of China and General Programs of the National Natural Science Foundation of China.