六神无主

idiom

panic-stricken; out of one's wits; distracted with anxiety; at a complete loss

Originally derived from Daoist belief, where 六神 refers to the six spirits governing the heart, liver, spleen, lungs, kidneys, and gallbladder. When these spirits are 'without a master' (无主), the person loses composure. Describes someone so frightened or anxious that they lose their bearings and don't know what to do.