lose after having got it
In Chinese idioms, Pinyin is d é R f ù sh ī, meaning refers to get and lose. From the romance of the Three Kingdoms.
Idiom explanation
Again, again.
The origin of Idioms
Chapter 96 of romance of the Three Kingdoms by Luo Guanzhong of Ming Dynasty: "Kong Ming changed his color and said:" what is it! Gain and loss are not the same. It's enough to make me blush. "
lose after having got it
in a melon patch or under a plum tree - lǐ xià guā tián
take advantage of sb . 's undefended state to attack - chéng xū dǎo xì