Forbidden City is an extreme large ancient palace in Beijing, and it is a classic route to visit the most essential halls on its central axis. After queueing up and getting into the palace from Meridian Gate, it is the vast square in front of the Hall of Supreme Harmony. The master pieces of Hall of Supreme Harmony, Hall of Central Harmony, Hall of Preserved Harmony, Palace of Heavenly Purity, and the Imperial Garden are shown successively.