Daily Chinese Idiom Guessing Game
To gain nothing at all; to have achieved nothing despite effort.
一无全无。什么东西都没有获得。
五代·王定保《唐摭言》然日势既暮，寿儿且寄院中止宿，颢亦怀疑，因命搜寿儿怀袖，一无所得，颢不得已遂躬自操觚。”
After hours of searching, he came back empty-handed and felt he had gained nothing.