四通八达

النطق: sì tōng bā dá المعنى الحرفي: Connected in four directions, reaching in eight

الأصل والاستخدام

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.

متى تستخدم

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

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