Literature Reference: 役役复役役，劳劳空自忙。—— 《古诗十九首》 Toiling and toiling, laboring in vain. Source from 'Nineteen Old Poems'.
役: On active duty, currently serving. Use with caution.
役: On active duty, currently serving. Use with caution.
Meaning: Toiling tirelessly embodies a spirit of relentless effort, yet hints at the emptiness and confusion amidst the busyness.