海是一座无城的墙
[hăi shì yī zuò wú chéng de qiáng]
This name 'The Sea, a Wall Without a City' metaphorically speaks of the sea as an imposing, solitary boundary or protector. Just like a city wall defends and delineates, but in this unique phrase, the ocean stands on its own without any human establishment (city) to defend. This can suggest feeling protective, detached, or self-sufficient like the vast, open ocean.