The castle of the Ryukyu Kingdom and related heritage groups refer to the monumental group in Okinawa, Japan, which was included in the World Cultural Heritage in 2000. Including the remnants of the city wall of the Ryukyu Kingdom, Mitake (the gods) and the Tombs of the King. The numerous cultural relics preserved on Ryukyu Island vividly illustrate that Ryukyu Island has been the center of economic and cultural exchanges between Southeast Asian countries such as China, South Korea and Japan for centuries. Under the influence of the economic and political environment of different regions and countries, the Ryukyu Kingdom gradually formed and developed a unique cultural system of its own. The religious sites of the Ryukyu Islands are a unique cultural phenomenon in the area, rooted in the local natural environment and the totem worship of the Ryukyu ancestors. Naha is the capital of Okinawa Prefecture and a hot spot for sightseeing. It has both the charm of the ancient capital and the modern atmosphere. The first is an ancient capital, and the "gate of ceremonies" is the second door of the first ceremonial city and is a symbol of Okinawa. The large plaque on the ceremonial gate was built 450 years ago and was given by the ancient Qing Dynasty in China. The archway is divided into two layers, and the plaque is placed in between. The four characters on the gold foil are partially removed from the history. The Yuanjue Temple near the University of Ryukyu, built in 1492, was the Bodhi Temple of the fashion dynasty. It was burned in wartime and now only has the gate part. On both sides of the gate, before the war was the Renwang Gate, which has now become the playground of the University of the Ryukyus. Opposite the Yuanjue Temple, there is a red tile square, which is the place where the Sundial Kings were buried.