A cornerstone of the qualification program of the IRTG is the exchange stay of each fellow during the dissertation phase at our partner institution in Seoul. The composition of the group guarantees that for each student there is a scientist from the partner institution matching the student's research interest and adding value to the expertise at home. The colleagues in Seoul offer to our doctoral students scientific input and stimulation from a complementary point of view and vice versa. After the exchange visit, doctoral students will report on their experiences during an IRTG retreat or in a separate meeting. It is planned that IRTG students from Bielefeld will visit the partner institution in South Korea during the fourth semester. The IRTG workshop in Seoul in 2018 resp. 2020 will take place at the beginning of the exchange stay.