The Jongmyo/宗廟 National Shrine and the Yeongnyeong-jeon/永寧殿 Shrine were places where the ancestral tablets of past Kings and Queens were enshrined. Constructions or renovations of these Shrines were sometimes considered to be more important even than the repairs made to the palaces, as they were symbols of loyalty and filial piety that were the most important Confucian values of the time. The Jongmyo National Shrine was first constructed during the reign of King Taejo/太祖 as a Jeongjeon/正殿 structure with 7 chambers and double-flanked left & right wings. Then 2 flanks were added during the reign of King Myeongjong/明宗, making the National Shrine a structure with 11 chambers in total. After the Shrine was burnt down during the Imjin-year war with the Japanese, the Shrine was rebuilt by King Gwanghae-gun in exactly the same fashion as it was during King Myeongjong's days. On the other hand, the Yeongnyeong-jeon shrine was first built during the reign of King Sejong/世宗. maintained a structure composed of 4 chambers in the Jeongjeon structure and double-flanked left & right wings for a while, and was rebuilt after it was burnt down during the same war mentioned above. During the reconstruction of the National Shrine, massive discussions ensued regarding the direction restruction should take, and final decisions dictated that any future renovations should honor and adhere to the basic layouts of the previous design, meaning that renovating the Jeongjeon structure should be the primary approach in later efforts. Yet in ".he case of renovations regarding the Yeongnyeong-jeon Shrine, discussions had to wait until the reign of King Hyeonjong/顯宗. Discussions of renovation were launched in the eve of transferring Kings Injong/仁宗’s and Myeongjong's ancestral tablets from the National Shrine to the Yeongnyeong-jeon Shrine (the Jocheon/眺遷 practice), and decisions were made to construct an additional single-flanked structure to the left & right rings, which would define the direction for future renovations. The construction of additional flanks and chambers were inevitable especially during the latter half period of the Cho6eon dynasty, as the number of chambers inside the Jongmyo National Shrine and the Yeongnyeong-jeon Shrine were constantly insufficient because of new demands. Such demands included the entitlement of the honorary King Weonjong/元宗 with a posthumous title, reinstating the late King Danjong/端宗‘s honor, and the increase in number of ancestral tablets that were decided to stay at the National Shrine due to the owner's exceptional honor and integrity. Later. the National Shrine was additionally renovated during the reigns of Kings Yeongjo/英祖 and Heonjong/憲宗. while the Yeongnyeong-jeon Shrine was renovated again during King Heonjong's days as well, to appear as the current status of today.