Niu hires a plane to sky-write his works. For one, called Tower of Babylon, Niu's hired aircraft "drew" smoke-trail lines (such as a spiral) over the Statue of Liberty, suggesting "a spiral doodle of liberation from her heavy lamp." The review said, "What a seduction!"
譬如他把飛機當做畫筆，雇了一架飛機，利用機尾的煙幕自由女神像四周「畫」上螺旋形圈圈，就好像一根線可以把自由女神手上的火炬拉起來。