Wǎngluò shàng de xìnxī hàorúyānhǎi, biànbié zhēnjiǎ yóuwéi zhòngyào.
Information on the internet is oceanic — telling real from fake matters all the more.
Tips
history
Attested in the Sui-dynasty monk Shi Zhenguan's 《梦赋》: '浩如沧海,郁如邓林' — 'vast as the azure sea, lush as Deng's grove.' The variant 浩如烟海 cements the 'misty sea of writings' image.
usage
Canonical partner is 文献 / 古籍 / 史料 / 资料 — written material in overwhelming quantity. Don't use it for physical objects or crowds.