zhàng'èr​jīn​gāng

to be completely baffled

Senses

丈二金刚/ 丈二金剛 zhàng'èr​jīn​gāng to be completely baffled

Used as part of a set phrase with 摸不着头脑 mō​bu​zháo​tóu​nǎo to describe being totally confused or unable to make head or tail of a situation.

References

see 丈二金刚/丈二金剛 摸不着头脑/摸不著頭腦