Lily I-wen SU is Distinguished Professor of the Graduate Institute of Linguistics at the National Taiwan University and served from 2016 to 2019 as Chief Executive Director of the Language Training and Testing Center (LTTC), a non-profit educational foundation in Taiwan. Hintat CHEUNG is Professor in the Department of Linguistics and Modern Language Studies at the Education University of Hong Kong. Jessica R. W. WU holds a PhD in Language Testing and Assessment and is the R&D Program Director at the Language Training and Testing Center (LTTC).