Jin Sen (pen name Jin Ziyan) from Beijing, China, carved the three Chinese characters “Duo Tian Gong” on the cross section of animal hair. The diameter of the cross section is 143.02 microns. No magnifying tools were used in the carving process. Verified by the WRCA, Jin Sen (Jin Ziyan) successfully created a world record for the “Smallest Chinese characters carved with naked eyes in cross sections of hair (3 characters)”.