Professor Sen was a Chinese women who attempted to assist both Lana Lang and Clark use the map to find the sacred item left by an All-powerful god. She was apprehended and killed by security guards.
Season 4
Lionel and Sen apparently knew each other, and he allowed Lana aboard one of his planes, and sent Lana to her to help her find the stone. Lana and Clark met up with her. When Clark had viewed what he thought was the entrance, he led them away. She and Lana were eventually apprehended, and one of the Chinese security guards snapped her neck.