四通八达

Pronunciation: sì tōng bā dá Literal meaning: Connected in four directions, reaching in eight

Origin & Usage

This idiom originated during the Warring States period and appears in 'Records of the Grand Historian' (史记). It describes roads or passages that connect and extend in all directions - four (四) main directions and eight (八) secondary ones, covering all possible paths. Originally used to describe the strategic advantage of well-connected territories, it later expanded to describe any extensive network. Modern usage applies to transportation systems, communication networks, business connections, or any well-developed infrastructure that provides comprehensive access.

Examples

English: "Shanghai's subway system extends in all directions throughout the city."

Chinese: 上海的地铁系统四通八达，覆盖整个城市。