During the Cultural Revolution, he and his family were targeted by Red Guards, who imprisoned Deng's eldest son, Deng Pufang. Deng Pufang was tortured and jumped out, or was thrown out, of the window of a four-story building in 1968, becoming a paraplegic. In October 1969 Deng Xiaoping was sent to the Xinjian County Tractor Factory in rural Jiangxi province to work as a regular worker. In his four years there, Deng spent his spare time writing. He was purged nationally, but to a lesser scale than President Liu Shaoqi.