Back to 1970 with a Pocket Dimension

Ye Zi returned to the 1970s in a parallel world, during the extraordinary period of going up to the mountains and down to the countryside. Most importantly, she had a whole crowd of siblings. It was bad enough not having enough to eat, but her parents had also had a whole bunch of kids! Luckily, her modern-day pocket dimension had come along too, so she was able to live fairly comfortably. Theme: