If I'd Known the System Could Make Money, Why Did I Ever Go to the Countryside?

[Period setting + System + cozy everyday life + food + military marriage + college entrance exams + starting a factory + making money] In her previous life, Chi Yuwei worked herself like a beast of burden. She earned money but never got to spend it before she died. She unexpectedly transmigrated to the 1970s. Ding! Congratulations, Host, your System has been activated! She thought she was finally on her way to the top, with a golden finger to help her crush all opposition. But when she tried the System's sign-in, she got 0.01. This System was honestly a little embarrassing... Yesterday she bought a potato for one fen. Today she bought a sweet potato for one fen. Biscuits, chocolate, candy... all kinds of delicious treats were right there, but she had no money! With no job, she had no choice but to go to the countryside. On her first day at work, she pulled weeds and cut her hand. On her second day, she got up in the middle of the night to tap rubber, then collect the latex. She was so exhausted she felt dizzy, and the mosquitoes joined in the fun. Ding! Congratulations, Host, you've unlocked Merchant Mode! The golden finger from the book had finally arrived. Boo hoo hoo... [Product: Pure wild dried sea cucumber Weight: 250 g Suggested price: 1,228 yuan per 500 g] Oh my goodness, I'm going to get rich! Go to college, start a factory, make money, and lie flat! Theme: Do what you want, do what you love, and enjoy a wonderful life! P.S. There is a male lead, but he's basically a background character and doesn't appear often.