不朽的少年有放肆的梦不腐的少女有狂妄的梦
[bù xiŭ de shăo nián yŏu fàng sì de mèng bù fŭ de shăo nǚ yŏu kuáng wàng de mèng]
It refers to 'an immortal youth having outrageous dreams' and 'an incorruptible girl with arrogant dreams,' expressing a spirit filled with boundless ambition and imagination regardless of reality.