India and Republic of Korea jointly issue the Postage Stamp under which of the following theme?

Union Cabinet chaired by Prime Minister Narendra Modi gave its approval about an MoU, which was signed in February, 2019 between India and Republic of Korea. Department of Posts, Ministry of Communications, Government of India and The Ministry of Science and ICT (Korea Post), Government of the Republic of Korea have mutually collaborated to issue Postage Stamps on the theme "Queen Hur Hwang-ok of Korea".