1.What do you know about Hiroshima?

Hiroshima is a seaport, the capital of Hiroshima prefecture in southwest Japan. on August 6, 1945, Hiroshima was the first city to be struck by an atomic bomb, dropped by the U.S. Air force, directly killing an estimated 80,000 people.

2.How do you understand the word “liveliest” in the title?

The word "liveliest" is put in quotation marks to show that this is what the city is said to be and the writer perhaps considers it ironic to use the word "liveliest" to describe a city that had been destroyed by an atomic bomb. The article is about the dual character of Hiroshima, the coexistence of liveliness and hidden pain, the result of the bomb.