Yap Tjwan Bing’s nationalism was already evident when he was 18. When studying at the Pharmacy Faculty at Universiteit van Amsterdam, he met and studied politics from Sukarno, Mohammad Hatta, and Douwes Dekker. He was the youngest member and only person of Chinese heritage in the Indonesian Independence Preparation Committee, and was involved in drawing up the 1945 Constitution. He became the first member of the Indonesian Nati