At my school, sports lessons included an exercise where we threw hand grenades (made from wood topped with metal to resemble the real thing) against a wall that stretched a red slogan with the reason for our militaristic “sport” – “exercise our bodies and protect our motherland.” We feared that China might be invaded one day by the American imperialists or Soviet revisionists. Indeed, the whole West seemed holding evil intent towards us. Living in a closed country, we had little idea about the outside world. I went to school in Nanjing in the early 70s, when the revolutionary fever of the Cultural Revolution was calming down. A few years earlier, my father was banished to the countryside for criticizing the government. My grandfather, a sma...