After being diagnosed with a terminal illness, the fake heiress binds herself to a rough-looking man

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[System/Clean Text/Difference in Body Type/Rough Guy in Rental Apartment/Extreme Pulling and Stretching]
Before Jiang Yu, the fake heiress of a wealthy family, was kicked out of the Jiang family, she was diagnosed with a terminal illness and only had three days to live.
System: [Move into an urban village, win over that mechanic, sleep with him once and you'll live for a year!]
To survive, Jiang Yu, carrying her Hermes bag, stepped into a dirty and chaotic shared apartment in an urban village.
The room was cramped and stuffy, with an old, creaky electric fan, and Huo Li, a burly man who was 188 cm tall, sweating profusely while repairing cars, with clearly defined abs.
Jiang Yu, her eyes red, slammed 100,000 yuan onto the broken wooden table: "Rent your bed, and while I'm at it... buy you."
Huo Li wiped the machine oil off his hands, grabbed her slender waist, and sneered, "Miss, my bed is very hard; I'm afraid you can't handle it."
Later, the single bed partitioned by thin wooden boards creaked every night, keeping the roommate next door awake all night.
Until one day, dozens of Rolls-Royces blocked the entrance to the alley in the urban village. It turned out that the rough man who pinned Jiang Yu against the wall and was willing to give his life for her was actually the real prince!
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What would happen if there were no system and no terminal illness? [Enter at your own risk if you're a fan of a clean story from the main text to the side stories.]