Throughout the ages, how many people with lofty ideals have not lost heart, worked hard, and finally achieved success. This is really "hard work pays off" (famous quote)

People often use "the spring silkworms will die when the silkworms are dead, and the wax torches will turn to ashes before the tears dry up" to praise those who have a lifelong spirit of silent dedication and burning themselves, illuminating Teachers of others’ noble qualities.

Guizi blooms and the fragrance spreads for ten miles. (What figure of speech is it?) Hyperbole

Why is he successful? Because he has gone through countless hardships.

(What rhetorical device is it?) Question