Zhōngguó de fánghuǒqiáng píngbì le hěn duō guówài wǎngzhàn.
China's firewall blocks many foreign websites.
Tips
memory
防 (prevent) + 火 (fire) + 墙 (wall) — a wall that prevents fire. The computing term was borrowed from the architectural concept, just like in English.
culture
In China, 防火墙 often refers to the Great Firewall (防火长城, fánghuǒ chángchéng), China's internet censorship system. Colloquially people just say 「墙」 (qiáng, the wall).
