The Friendship Hall is the centrepiece of the garden. This building hosts most of the exhibitions held at the garden. The many windows and doors set in the pavilion's walls give visitors a sense of always being in contact with nature, allowing them to follow the sun's course. In the centre of the pavilion, the eyes are drawn to an impressive lantern decorated with birds, dragons and phoenixes.

The combinaison of sturdiness and elegance seen in the Friendship Hall is a legacy of Ming dynasty architecture. This formidable building of some100 square metres (1 076 sq ft) is topped by an imposing roof, whose substantial mass is relieved by the numerous windows on all sides of the wooden structure, by the gallery that girds it and especially by the roof's distinctive curved corners.

The corbelled and skirting roofs, typical of Chinese architecture, protect the building from rain and sun while allowing abundant natural light inside. With its arched corners turning skyward, the roof produces an effect of lightness and stability.

The substantial weight of the roof rests on an unusual framework. The longitudinal main beams and transversal secondary beams distribute the weight in both directions. The weight of the beams is, in turn, transferred to the 36 columns.