(Urbana, IL) — It’s been nearly a year since a Chinese-born U of I scholar disappeared, and authorities say they still don’t know where her body is. Saturday marks the one-year anniversary of Yingying Zhang’s disappearance. Investigators say a former University of Illinois student, Brendt Christensen, kidnapped her and likely killed her. Zhang’s friends are planning a memorial this weekend, they say to keep her memory alive.