When I Was In The 70s, My Best Friend And Big Brother Pampered Me To The Heavens

[Era + Dual Time Book + Exchange of Marriage + Ease of Pregnancy
And what a coincidence, her best friend An Xiaoxiao became her nemesis and vicious female partner!
"Xia Xia, do you really want to marry the male protagonist?"
And because of your easy-to-pregnancy constitution, you get pregnant easily. As a result, every child is malnourished and causes fetal arrest, and finally you die of miscarriage and massive bleeding?
"Xiao Xiao, are you still going to provoke the heroine?"
The heroine is a reborn woman, competing with her for opportunities, resources, and men, and finally being sent to a mental hospital by the heroine?
“Don’t marry!”
“Don’t go!”
The two hit it off and decided to stay away from the protagonist group.
However, both of them are 18 years old. If they don’t find a partner, they will be sent to the countryside!
"Yes! Do you remember my eldest brother who is an heir? He is a special soldier! He is very fierce. Do you dare to marry?"
"Do you remember my brother-in-law who is a capitalist young master? He will be the richest man in the future! But his background is not good, do you want to marry?"
The two people who had the memories of the original book said in unison:
"Marry!"