Teachers at Harvard often remind students that if they want to be adept and receive due evaluation at any time and on any occasion after entering society, they should make full use of their time to study hard during their time at Harvard, rather than using their spare time to doze off.At Harvard, students study day and night. Even at 4:30 in the morning, the entire campus is brightly lit, like a city that never sleeps. This book starts from the perspective of teenagers' inspirational goals, and reveals the secrets of Harvard University's cultivation of social elites through specific teaching examples, in order to inspire teenagers to study hard and strive for success.