Introduction to Jiuding Terrace: is located in the center of Yubei Garden. The outside of the table is round and the inside is square. The diameter of the round table is 18 meters and the diameter of the square table is 9.999 meters. Nine granite tripods are placed on the rostrum, each weighing 1.2 tons. Jiuding is the symbol of the highest power of the country in ancient my country. It embodies the unification of the motherland, the prosperity of the nation, and the supremacy of national interests above all else.