In Joseon, scholars criticized the kings who wrote poetry. They believed that a king had to be like the sun, which shines upon all creations on Earth equally, regardless of whether they are beautiful or hideous, and artistic activities that reveal one’s feelings were not suitable for a king. However, kings were human beings as well, and they also desired to express their emotions. Also, they used poetry politically; for instance, they wrote poetry for the vassals to gain their loyalty or for the purpose of bolstering his power and authority. They also communicated with the vassals by exchanging poems.