急如星火

lit. as hurried as a shooting star (idiom); requiring immediate action / extremely urgent

as / as if / such as

fire / urgent / ammunition / fiery or flaming / internal heat (Chinese medicine) / hot (popular) / classifier for military units (old) / Kangxi radical 86

star / heavenly body / satellite / small amount

urgent / pressing / rapid / hurried / worried / to make (sb) anxious

spark / meteor trail (mostly used in expressions like 急如星火[ji2 ru2 xing1 huo3])