1939, he got a chair in Sorbonne University and published the first book "Feudal Society", which is already an impossible work. In the same year, World War II broke out and Bloch joined the army. 1940 retired. He opposed the so-called Jewish law of the French government at that time, and also opposed the Jewish organizations in France, and always considered himself a member of the Republic of China. This year, he wrote "Strange Failure". After the Germans occupied the southern free zone, he joined the resistance. We already know what happened afterwards. We don't know what Bloch finally thought when he fell on the battlefield. He always cares about humanity. Even the landscape is a humanistic landscape. "Behind the lines of the landscape, behind the tools and machines, behind the coldest words, behind the seemingly unrelated institutions, is the human being that history wants to capture. Otherwise, it's just some profound work.