回复：回复：Purdue尹湛: one of the sister was his labmate

By the way, Yin did complain about the girl for intentionally pleasing the professor, grabing yin's half finish project away, and aurthorship on paper, etc, those sort of things, way before the murdering.  Those complains seem to be common in academy environment, and most time, life goes on with complain goes on. However, it did trigered quit a few tragedies, such as Lu, Gong's case.