Chinese artist Qie Zhijie is known for working in mediums as diverse as calligraphy to performance art. Much of his work, though, is tied together by a subtle mischievousness. These two sculptures constructed by Qie, Oil Can Dragon and Cash Cow, are no exception. Both sculptures are entirely built from skillfully cut oil barrels. Considering the dragon and the tree are both symbols strongly tied to the natural world it’s clear Qie’s choice of using oil barrels wasn’t a trivial one. In Cash Cow, an imposing tree of six stacked oil barrels, Qie contrasts birds perching on boughs and cut from metal lids with an airplane high its branches.