Reborn as a Sweetheart in the 1960S

It's the 1960s, and there's not enough to eat or wear. What do you do? Of course, you rely on your talents to get rich! You meet your grandparents when they were young. What do you do? Of course, you waste no time becoming their friend and helping them get rich together! What if you accidentally find yourself in danger? Well, of course... you keep your head down and stay out of trouble. It's not like you have a golden finger! And when the spring of Reform and Opening-Up arrives? What are you waiting for? Take the man you've set your sights on, roll up your sleeves, and get to work! You have to become a tycoon to make your trip back to the past worthwhile! (This story is set in a fictional world, so please don't scrutinize the historical details.)