Get a sign-in system at the start

(This is a cool novel, how come it's cool, don't refer to reality, parallel world, single heroine, single heroine, single heroine, important things are said three times.)
Sign in at the beginning to get a financial street, with a rent of 200 billion a year.
Am I at the pinnacle of my life?
Ding, you signed in successfully and became the fiance of Tianlong Group's daughter.
"What? Can you sign the wife of the richest man?"

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