like: 茅塞顿开 → →
茅塞顿开 [mao2 se4 dun4 kai1] ☊ 
murky darkness suddenly opens (idiom); a sudden flash of insight and all is clear ☊ 茅塞顿开 [mao2 se4 dun4 kai1] ☊ murky darkness suddenly opens (idiom); a sudden flash of insight and all is clear ☊