Stock up on Supplies and Win in the Mid-1970S

[Chronology + time travel + educated youth + space + cp] One day, Su Qinglan was found by a system, and then traveled to another time and space, allowing her to live a happy life in place of a little girl whose life should not be cut off, but who had no hope of living. Facing that era of scarcity of supplies, fortunately Su Qinglan held an item that could be exchanged for 100 years of that era, and had already saved billions of assets before traveling through time. Early highlights: Shen Qinglan took space to catch up with the educated youth going to the countryside, and secretly ate alone; And use space to avoid danger; Later, I met my uncle's family and was able to return to the city to study abroad. After returning to China, I gained family, friendship, and love... (PS: In the later stage, the heroine does not use much space. She mainly uses her strength in big events. Because the heroine has more bread after she grows up)