旷若发蒙

Explanation: Kuang: open; open. Mongolia: blind. Bright eyes suddenly open, as if blind people suddenly see things. Metaphor of mind has suddenly enlighten people, informed them. 　　Source: San Guowei should Qu "and the younger brother Jun Miao Jun helmet from the book": "busy person this tour, like the infinite, Tang Ji Creek Mountain, open if fameng." 　　Examples: Upon suddenly handwriting, ~. ★ Sushi Song "and the Zen Master For Yin book"