Located in the lobby of Engineering Building I, this was the first piece of public art acquired by NTHU through an open tender. Passage（1999）depicts the circular relationship between life, learning, and the interactions between individuals. Within a large circular chamber at the bottom of the work are over a thousand rubber balls which are fed through a winding transparent pipe into the ceiling, and then through another transparent pipe on the wall, from where they drop to the floor and roll back to the starting point, a cycle that repeats itself ad infinitum. The internal mechanism was damaged in the 921 Earthquake, rendering it inoperable. Repairs were made in 2009, but due to the large amount of noise it generates, the mechanism is now only turned on for special events.