idiom > impossible date,since there is no “ mule year”
In January donkey horse
Explanation: Unknown years.
lǘ nián mǎ yuè
I do not know what year - ridiculed language. Said, "One of these years", "Year of the Ox on which"
Translated by Google
No. 3
Unknown years. Liang Bin, "Red Flag" 29: "Even a little hope, but also in Malaysia at that ass on it?" "Xinhua Digest" 1981, No. 4: "Research studies, research on which to donkeys years!"