Ken Rao founded Taiwanese label Professor E. in 2017. Under the principle of intersection, Professor E. applies artisanal fabrication methods to casual silhouettes, draws inspiration from Eastern and Western visual aesthetics, and reinterprets popular styles with traditional design tenets. Professor E frequently utilizes cotton and hemp, along with fabric stitching and patching. Deconstruction is a signature element, used to emulate artisanal craftsmanship. The brand offers a variety of outerwear, tops, pants, and accessories.