Mounting up along the zigzag road behind the Foxiang Pavilion and passing the colorful glazed arch, we can get to the Sea of Wisdom, the architecture at a commanding elevation on the Wanshou Hill. It is also where the central axis of the front hill meets that of the rear hill.

Built in the Emperor Qianlong's reign, the Sea of Wisdom is in fact a two-story religious hall without the support of any beam. Thanks to its brick strcture, the building survived the war of 1860, but the Buddha paintings and over 1,000 small glazed Buddha statues on the walls outside the hall were severely destroyed in the wars of 1860 and 1900.

Deriving its name from Buddhism, it sang high of the vast wisdom of Buddha. The inscriptions on the arch and those on the steles of the front and rear halls formed a Buddhist chant, describing the scene of the holy place of Buddhism.

| The Summer Palace |