Redouane Djamouri, Director of Research at CNRS and member of CRLAO, specializes in Archaic Chinese syntax and semantics. His recent work explores language contact in China, especially with Altaic languages, and includes field research on Tangwang since 2008.Christine Lamarre, professor emerita at Inalco and member of CRLAO, specializes in morpho-syntactic variation in Sinitic languages. Her research covers modality, motion, aspect, and tense, with fieldwork in Northern China and studies based on historical Chinese grammar texts.Julie P.M. Lefort, Associate Professor at INALCO and member of CRLAO, researches Sino-Mongolian language contact in Gansu, focusing on Dongxiang and hybrid varieties like Linxia and Tangwang. Her work combines fieldwork, typology, and contact-induced grammaticalization, with several related publications.