I think Beethoven’s brief deeds are:

1. Childhood experience: His childhood was not happy, and his father’s strict training had a negative impact on his physical and mental health.

2. Deafness: Beethoven began to have hearing problems at the age of 26 and gradually lost his hearing. And even after losing his hearing, he still maintained his love and pursuit of music.

3. Creative achievements: His creative career spans multiple musical fields, and his works have profound ideological connotations and emotional expressions.