天涯咫尺

Explanation: Zhi: ancient unit of length, Zhou system of eight inches, six inches of aggregate half Erli this Shichi; right close: very close analogy. Although the metaphor from the past, it is difficult to meet, as far away as is. 　　Source: "Zuo Xi nine public": "Yan Tianwei do not violate right close." Tang Li "Palace word two": "Moon Shadow ramp door curtains, Greenwood right close every horizon." 　　Examples: Zhongchang things, without the exhaust, like water rolling, phase flow, we do not, the opposite is also unhappy, ~. ★ Ming Hu Wenhuan "group sound triage and friends to remember and match, respectively, Huai Yin"