Some chéngyǔ have English equivalents. For example, ("yán bù yóu zhōng", lit: "speak not from the bosom") and "to speak with one's tongue in one's cheek" share idiomatic meanings. The Chinese not having conducted maritime explorations of the North Atlantic during imperial times, the expression ("bīng shān yī jiǎo", lit: "one corner of an ice mountain") is a rare example of a chéngyǔ that emerged in the early 20th century after contact with the West as a translation of the expression "tip of the iceberg," thus sharing both their literal and idiomatic meanings. Another expression ("huǒ zhōng qǔ lì", lit: "extracting chestnuts from the fire") originates from a La Fontaine fable means "to be duped into taking risks for someone else," used in much the same way as the expression "cat's paw" in English is another example of an "international" chéngyǔ. Though they are recent in origin, they are constructed using the vocabulary and syntax of Literary Chinese and fits within the four-character scheme, making them chéngyǔ.