Answer:
At the Winter Conclave, Citra is chosen as the new scythe. They give her a knife to glean Rowan, but she punches him in the face to start off. His blood hits her ring, granting him immunity for one year.
In the evening, Scythe Curie tests the apprentices with questions designed to gauge their morality and their knowledge. Citra fails her test by lying about the worst thing she's ever done, while Rowan fails on purpose to make her feel better.