烟花再美终究只不过是一瞬
[yān huā zài mĕi zhōng jiū zhĭ bù guò shì yī shùn]
'Yan Hua Zai Mei Zhong Jiu Bu Guo Shi Yi Shun' can be translated as 'No matter how beautiful fireworks are, they only last for an instant'. It implies that even if some things in life may be extremely delightful or beautiful, it might be temporary and transient just like fireworks.