Literature Reference: Cast aside the brush, no longer a petty official, donning the warrior's attire to follow the renowned general. Source from 'Song Ren Wan Ping Shi Qu Yi Hai'.
掷: It means to throw, cast, or toss. Caution is advised due to potential ambiguity.
笔: The brush pen, a tool for writing and painting, later came to symbolize the instruments for calligraphy and drawing, embodying the art of writing and the techniques of brushwork.
Meaning: Casting aside the brush symbolizes abandoning a civilian role for a military one, embodying bravery, decisiveness, and ambition to explore the world.