Under the long-term support by Ministry of Science and Technology and Academia Sinica, Dr. Ya-Ju Hsu and her research group investigated the lower-crustal rheology beneath the Taiwan orogenic belt using the Global Positioning System (GPS) observations more than a decade following the 1999 Chi-Chi earthquake. Their result manifested the non-linear relationship between stress and strain rate in the lower crust, against the linear relationship often considered previously. The short-term modulation of lower-crustal strength during the seismic cycle throughout the geological time may largely facilitate the mountain building. This work was published in Science Advances, the well-known multidisciplinary open-access scientific journal under the American Association for the Advancement of Science (AAAS), on 27 February 2019. [Details] [Article website]