[胡思乱想 / 胡思亂想, hú sī luàn xiǎng, ㄏㄨˊ ㄙ ㄌㄨㄢˋ ㄒㄧㄤˇ]to indulge in flights of fancy (成语 saw); to let one's imagination run wild; to have a bee in one's bonnet; unrealistic utopian fantasy#14804[Add to Longdo]
[镜花水月 / 鏡花水月, jìng huā shuǐ yuè, ㄐㄧㄥˋ ㄏㄨㄚ ㄕㄨㄟˇ ㄩㄝˋ]lit. flowers in a mirror and the moon reflected in the lake (成语 saw); fig. an unrealistic rosy view; viewing things through rose-tinted spectacles#66184[Add to Longdo]