We answer the question of life. Swallowing the sun and the moon, we answer life. Meaning
All-powerful, 叱咤: an angry shout. A shout or an angry shout can stir up the storm. The description is extremely powerful. Describe a person with great influence.
To swallow the sun and the moon is a metaphor for being broad-minded, optimistic and full of confidence.
Taken together, this sentence can be understood as: How should life be spent? We should work hard and make achievements; we should be broad-minded and full of pride. The poems are filled with positive, optimistic and high-spirited passion.