Leonardo da Vinci likes to write with his left hand. If he writes with his left hand, writing backwards will not cause ink stains. Maybe he did it on purpose and didn't want others to steal his notes and manuscripts. Guernica used symbolism to express the cruelty of fascist atrocities and the suffering of the people. The theme of his works is peace, which shows his dissatisfaction with the brutality of Franco's government. The significance of this painting goes beyond the protest against simple events, but a cultural demonstration in political struggle, and even becomes a cultural confrontation against violence.