瞻前忽后

Explanation: Phrase from the "Analects of Confucius Zaihan": "Bringing the front, suddenly Yan in the post." After "looking after the former suddenly" to describe elusive. Ming Tang Shun, "A king of rock Compliance": "However, there are things that, you see what He heard; that nothing, then the reference value before the Forest. Foresight suddenly, the non-chest is not linked to the world one thing, it can not appear in this material . "