空洞无物

空洞无物 [kōng dòng wú wù]

1. ■ utter lack of substance; shallow understanding; as bare as the palm of one's hand; an empty cave without anything; devoid of content; nothing at all:

这种空洞无物的八股调， 我看了就讨厌。 It makes me sick to read over such stereotypes devoid of content.