"…images that at first appear unrelated begin to respond to one another… they ripple invisibly across the surface of reality. Within a non-narrative structure, a poetic order emerges, drawing forth a mysterious network where all things exist and feel together. Yehlin gazes at the unruly wildness on the verge of collapse, gazes at the undying sincerity of reverence. Undercurrent becomes a contemporary Record of Searching for the Spirits, preserving the mythic topography of the Chianan Plain."

— Yu-Hsuan (Frida) WU, Poet