In order to promote better understanding of environmental protection and also to establish the consensus of environmental conservation being the responsibility of every citizen, this Directorate released a set of Environmental Protection Postage Stamps. The designs of the two stamps were adapted from Yen Chao-min's〝No More Noise Suppression〞and Hu Hui-chun's 〝Clothing My Hometown with Green〞which were the two best paintings selected from the National Competition of Primary & Middle Schools for the Designs of the Environmental Protection Stamps jointly held by the Environmental Protection Administration, Executive Yuan and this Directorate.