Visiting scholar, Mr. Karel Joeleht (偉韜) has registered at Center for Chinese Studies on August 5, 2025. He is an Estonian scholar who is a PhD student at the Tallinn University, Estonia. Mr. Tumanut’s research period in Taiwan is from August to October, at the Office of Lo-Chia-Luen International Sinology Chair, National Chengchi University. His research topic is "Zhang Shenfu and Mou Zongsan: A Comparative Study of the Translations of Wittgenstein's Tractatus".