火速

huǒsù

adverb HSK 7-9 #23,828

Meanings

消防车火速赶到现场。

Xiāofángchē huǒsù gǎndào xiànchǎng.

The fire truck rushed to the scene at top speed.

请火速回来！

Qǐng huǒsù huílái!

Please come back immediately!

memory

火 (fire) + 速 (speed) = speed of fire. Fire spreads fast — so 火速 means with extreme urgency.

火 huǒ

速 sù