岛是海心上的疤海是没有墙的城
[dăo shì hăi xīn shàng de bā hăi shì méi yŏu qiáng de chéng]
A metaphor expressing islands as scars upon the sea, which can't be walled like a city, indicating a place of vulnerability, openness, and isolation within vastness, potentially suggesting emotional depth and loneliness.