Four elbows
Four elbows, Chinese idiom, Pinyin is B ì y ǒ us ì zh ǒ u, metaphor extraordinary appearance. It comes from body category in Volume 2 of youxueqionglin.
Idiom source "youxueqionglin · Volume 2 · body type": there are three leaks in the ear, the odd shape of Dayu, four elbows in the arm, and the variant of soup.
Four elbows
harm the country and bring calamities on the people - rǔ guó yāng mín
see what one has never seen before - jiàn suǒ wèi jiàn