meeting and departing are irregular
As a Chinese idiom, Pinyin is Hu ì sh ǎ ol í Du ō, which means feeling the vicissitudes of life or the pain of parting. From "butterfly in love with flowers - send you brother"
The origin of Idioms
Song Xin Qiji's poem "butterfly love flower · send you younger brother" says: "you will see the temples more often, not to mention the new disease."
Idiom usage
I only ask you that, it's invisible. The third discount of the first book of the romance of the Western chamber by Wang Shifu in Yuan Dynasty
meeting and departing are irregular
make obeisance and perform the rites of courtesy - kē tóu lǐ bài
Save the time and improve the customs - jiù shí lì sú
as nimble as an escaping hare when going into action - dòng rú tuō tù