The 4th GHAS Young Scholars Workshop was jointly organized by GHAS and the Petra Christian University (Indonesia). It was held on August 17–22, 2026, at the Petra Christian University in Indonesia. This year's Young Scholar Workshop aims to explore Chinese Hakka and multi-ethnic groups from the perspectives of industry and economy, history, culture and social transformation, religious and ritual beliefs, and language and educational practices. Young scholars from National Central University, National Yang Ming Chiao Tung University, National United University, and National Kaohsiung Normal University in Taiwan, as well as Tokyo Metropolitan University, Petra Christian University, the Universiti Malaya, the National University of Singapore, Mahidol University, and Universiti Tunku Abdul Rahman, gathered together to engage in fieldwork, academic exchange, and research sharing, exploring diverse dimensions of Hakka studies.