hostage in 627. In 628, Silla defeated Baekje at the fortress of Gajam and in 629 generals Kim Yong Chun (김용춘), Kim Seo Hyeon (김서현), and Kim Yushin (김유신) conquered Goguryeo's fortress Nangbi (hangul:낭비성, hanja:娘臂城). Later reign The continuous battles with Baekje and Goguryeo took its toll on Silla and its people. Drought, famine, and disquiet spread through the country. The ruling nobility frequently held conflicting political views; when King Jinpyeong designated his daughter Princess Deokman as his heir the division grew even deeper, as many nobles were opposed to the idea of having a queen. Political dissension reached its peak in May 631, when Ichan Chilsuk (이찬 칠숙) and Achan Seokpum (아찬 석품) plotted an uprising based on their opposition to having Princess Deokman as their next ruler. The revolt was discovered in advance and was stopped by Alcheon and Bidam; Chilsuk was beheaded in public and his relatives executed. Although Seokpum was able to escape, he later returned and was eventually captured and killed. With the rebellion put down, power was left mainly in the hands of the King's supporters (the most important of them was Kim Yushin, Commander in Chief of the Royal Army from 629), and it was in this political atmosphere that Princess Deokman was able to become Queen. King Jinpyeong died in January 632, in the 54th year of his reign. He is buried in Bomun-dong, Gyeongju. His tomb was designated a historical landmark by the Korean government in 1969. Legends The King's Jade Belt There is a story about King Jinpyeong's jade belt in the history Samguk Yusa, in which the belt is said to have been given by the heavens. In 579, when King Jinpyeong ascended to the throne, angels landed on the palace gardens and gave King Jinpyeong a gift from the Jade Emperor. King Jinpyeong always wore this belt in rituals and ceremonies in honor of the heavens. Along with the 9 story pagoda and statue of Buddha at Hwangnyong Temple, the jade belt is considered one of the three main treasures of Silla. After the fall of Silla, King Gyeongsun gave the belt to Goryeo's Taejo. The Fire of Mojiak The first record of coal in Korea is in the Samguk Sagi, where there is a description of a "fire burning under the ground of Mojiak (hangul:모지악, hanja:毛只嶽) for 9 months during the reign of King Jinpyeong in the