Parallel time and space, 1975, Chenjiazhuang. A group of people are mowing grass and cutting firewood in the back mountain. They have completed the autumn harvest of the year and have finished all the work in the fields. Now they need to store fodder and firewood for the winter. A thin young man was leaning behind a big tree. If you look carefully, you will find that the young man's face is pale, and his slightly opened eyes have sluggish pupils. Suddenly the young man stood up, his dull eyes lit up, and he was stunned in place for an instant. I, I have traveled through time.