He used to be a member of the Chinese gang.

He experienced the harsh reality of the underbelly of society.

His sociability is an important factor for his success as a leader.

He is deeply interested in social issues.

He deeply believes in the principles of socialism.

He understands his responsibilities as a working adult.

After graduating from university, you have to prepare to enter the real world.

He is an expert in ethology, and his research is highly regarded worldwide.

He started a new business, but as the proverb 'the road to happiness is strewn with setbacks' suggests, he is facing many difficulties.

He is deeply studying the teachings of Prajnaparamita.