Complex sentence: Dr. Kuan Huang (1829--1878), the first Chinese person to study medicine abroad, a Cantonese who went to Edinburgh University in Scotland, and then disseminated what he had learned on returning to his native Canton.
Split into simpler sentences: Dr. Kuan Huang (1829--1878) was the first Chinese person to study medicine in abroad. He was a Cantonese who went to the University of Edinburgh in Scotland, and then disseminated what he had learned on returning to his native Canton.