Architecture, Building and Structure Design Longfor Hefei Paradise Walk Mixed-Use Office by Aico Ltd Longfor Hefei Paradise walk is a regional shopping center in Hefei. The project takes advantage of TOD comprehensive development. It connects the underground level of Metro line2 in the west, and the ground level of terminal bus station in the east. In the interior, the project circulates through three main theme atriums of Ferry, River Valley and Harbor. In the exterior, the project creates three roof gardens on different floors. It has become a brand new city landmark in Hefei.