To be unable to make any sense of a matter or understand what is going on; to be completely baffled

to be unable to make head or tail of something; to be completely uncomprehending or in a quandary

To be completely baffled or unable to make head or tail of a situation; literally describes being unable to touch the head of a monk who is two [[丈|丈|zhang4]] (about 6.6 meters) tall.

lit. like a twelve-foot golden warrior whose head cannot be reached; to be completely puzzled or unable to make sense of a situation

To be unable to understand the cause of something; to feel confused or be at a complete loss.