你若安好便是晴天你若微笑日光倾城
[nĭ ruò ān hăo biàn shì qíng tiān nĭ ruò wēi xiào rì guāng qīng chéng]
'If you're well, then it’s a fine day; if you smile, the sun pours upon the city,' signifying how one person's mood or presence deeply affects the narrator’s perception of their surroundings and environment.