Mausoleum of King Hotae (373 - 413 AD). Located in Jilin, China. The Tomb of the General, is an ancient Korean pyramid, also known as the Pyramid of the East. The pyramid is thought to be the burial tomb of King Gwanggaeto or his son King Jangsu, both former Kings of Goguryeo. Gwanggaeto the Great was the nineteenth monarch of Koguryeo. His name is sometimes abbreviated to Hotaewang. Gwanggaeto's imperial reign title meant that Goguryeo was on equal standing as an empire with the imperial dynasties in China. Under Gwanggaeto, Koguryeo began a golden age, becoming a powerful empire and one of the great powers in East Asia. Gwanggaeto made enormous advances and conquests into: Western Manchuria against Khitan tribes; Inner Mongolia and the Maritime Province of Russia against numerous nations and tribes; and the Han River valley in central Korea to control over two-thirds of the Korean peninsula.