After being caught causing trouble at the hospital, the three Zeng family members (Hu Sifeng, Zeng Fuzhen, and Zeng Yuejin) were taken by the Red Guards with armbands for ideological re-education. They were forced to stand under the hot sun for at least two days without water. Being unused to fieldwork, they couldn't endure the suffering and were half-dead when finally released after 8 PM.