Professor King-Chuen Lin (1953–2022): A visionary chemist, a role model of persistent scientist, and an inspiring mentor, who dedicated his fruitful research career to chemical dynamics, analytical spectroscopy, biophysical instrumentation, and nanomaterials. Professor King-Chuen Lin hailed from Kaohsiung, a bustling port city in southern Taiwan. Upon graduation from the esteemed Provincial Kaohsiung High School, he achieved an impressive ranking in the national university entrance examination to enter National Taiwan University (NTU), the premier institution of higher education in Taiwan. In 1975, he earned a Bachelor of Science degree in Chemistry from NTU. Following his mandatory military service, Prof. Lin set his sights on Michigan State University, where he pursued his doctoral studies. Under the guidance of Professor Stanley Crouch, he completed his Ph.D. in Chemistry (with a focus on Physical and Analytical Chemistry) in 1982. Afterward, he embarked on a post-doctoral training experience at Cornell University. In 1984, Prof. Lin returned to his beloved alma mater in Taiwan and joined the Department of Chemistry at NTU, as a faculty member with a joint appointment in the Institute of Atomic and Molecular Sciences (IAMS), Academia Sinica, the preeminent academic research institution in Taiwan directly responsible to the Presidential Office. He was soon promoted to the position of full professor in 1988. In 2006, he was honored with the esteemed title of Distinguished Professor at NTU. Prof. Lin had a distinguished career spanning almost 30 years at NTU and Academia Sinica, establishing himself as a renowned scholar. He received numerous accolades, including prestigious recognitions such as the Distinguished Research Award and Distinguished Research Fellowship from the National Science Council before 2002. In subsequent years, he was honored with the Academic Award from the Chemical Society Located in Taipei (2009) and the Academic Award from the Ministry of Education (2014), further solidifying his reputation as an esteemed chemistry scholar. In 2018, Professor Lin was the recipient of the R.B. Bernstein Award in Stereodynamics (Switzerland), recognizing his outstanding contributions to the field. The following year, he received the highest academic honor in Taiwan, the National Chair Award, from the Ministry of Education in 2019. These prestigious awards and honors underscore Professor Lin's exceptional standing in academia. Prof. Lin, a visionary and productive chemist, demonstrated a remarkable breadth of research interests spanning multiple fields, including chemical dynamics, analytical spectroscopy, biophysical instrumentation, and nanomaterials. His mentorship extended to numerous young chemists across the globe, including graduate students, post-doctoral fellows, and collaborators. Prof. Lin dedicated tireless efforts to various research projects and provided enthusiastic guidance to approximately 20 doctoral students and over 100 master's students, ensuring their successful completion of their graduate studies.