spout a lot of erroneous opinions
Fallacy, Chinese idiom, Pinyin is d à f à mi à L à n, meaning vague and impractical speech.
Idiom explanation
It refers to empty and impractical speech.
Idiom usage
Before you express your opinion, you need to know the real situation of the matter first. You can't just half understand it, otherwise you will be ridiculed.
spout a lot of erroneous opinions
extraordinary as if done by the spirits - guǐ fǔ shén gōng