For the first 20 years of his life, Wu Tseng-dong lived in a war zone. Growing up on Kinmen Island, a small Taiwanese territory four miles off the coast of mainland China, bombs were a constant threat. “It was terrifying. We were always panic-stricken,” Wu says. “We had to scout out places to hide when the bombs dropped. A big tree is good because it can block the impact, but the best place to hide was inside a gutter.” For much of the 20th century, Kinmen was a battleground. A…