Conversation so far:
What university did Achebe attend?
Known as University College (now the University of Ibadan), it was an associate college of the University of London. Achebe was admitted as a Major Scholar in the university's first intake
What year did Chinua Achebe attend?
In 1948
What did Chinua Achebe study at the university?
He was given a bursary to study medicine

Question: What happened when he changed his field of study?
Self-contained rewrite: What happened when Chinua Achebe changed his field of study?