冥冥之中

míngmíngzhīzhōng
  1. in the unseen world of spirits
  2. mysteriously and inexorably

CEDICT

人所無法預測，人力無法控制等不可理解的狀況。亦即一般所稱的命運。

重編國語辭典

Entry Composition

1 冥冥 míngmíng
  1. (literary, ideophonic) dusky; dark and gloomy
  2. dusky; dark and gloomy
2 之中 zhīzhōng
  1. inside
  2. among
  3. in the midst of (doing sth)
  4. during