One of the monochrome paintings he produced later in life "The Shrike" expresses his ultimate teaching of swordsmanship, namely, "the myriad principles are all of the Void." The insect that can be seen roughly in the middle of the painting, crawling up the branch of the withered tree, provides us with a hint of the meaning of swordsmanship hidden within the work. Ono interprets the painting as such: The Shrike is waiting for the fish in the pond. She could shake the dead branch to make the insect fall into the water which will entice fish to come out and eat the bug. Before then, the insect has eaten up all the leaves of the tree which was transformed into a dead tree. The shrike could catch the fish, and strike her catch to the other pointed branch to kill it. Thus: Fish kills worm; worm kills tree; shrike kills fish...; The unseen kills shrike; new trees grow around the dead tree; Shrike, fish, worm, dead trees all turn into fertilizer to grow the new tree. Such i