XU, Yiming, graduated in 2020 at the Department of Physics, SUSTech, now a Research Assistant at the Department of Physics, SUSTech. I come from Luoyang, one of the Four Great Ancient Capitals of China. My hobbies are very broad, including traveling, playing table tennis, reading books, Wing Chun, and physics. I hope to make the future of human better. My research activities at SUSTech are mainly focused on angle-resolved photoemission spectroscopy (ARPES), which is a technique based on photoelectric principle to acquire energy bands of single crystals.