Little Daughter-In-Law of the Seventies

Water poured into her mouth, and Qi Yue's chest and abdomen swelled. The pain made her convulse. What was worse was that she could not breathe in the water, and the shadow of death struck her heart. Perhaps it was her nostalgia for the world that made the heavens take pity on her. A breath of fresh air poured into her mouth, and her heart started beating again. But who knew why the old hand-torn calendar had the words "April 21, 1976" printed on it? What was going on?