Over the past few decades, time-resolved ultrafast spectroscopy measurements have emerged as new frontiers of condensed matter physics via manipulating and detecting different orders of quantum materials. By combining some traditional experimental techniques with ultrafast pulse lasers, such as angle-resolved photoemission spectroscopy (ARPES), X-ray diffraction (XRD) and optical spectroscopy, ultrafast pump-probe experiments can provide new insights into the electronic nature of quantum materials. This is done by selectively exciting certain quasiparticles or different degree of freedoms with ”pump” pulses, and...