乱世温存一笑倾城
[luàn shì wēn cún yī xiào qīng chéng]
It can mean 'In Chaos Save Warmth and a Smile Can Capture City’s Hearts.' It refers to preserving tenderness and warmth, and spreading beauty, happiness in troubled times. 'A Laugh that Enchants an Entire City', indicates exceptional charm and beauty that could bring people hope during difficult era.