to have blurry vision; to admire flowers in the mist

比喻看事物不真切，对情况不了解to only have a vague or distorted understanding

• 1995年5月1日前，双休日还是雾里看花，如今好梦已经成真。

  Before the 1st of May 1995, one only had a vague understanding of weekends, but now this dream has become reality.

• 这些部门在一些收费上雾里看花，让人读不懂。

  These departments are vague on some charges, meaning people cannot understand them.