Be familiar with the training materials of CET-4 and CET-6 in advance, and be familiar with the invigilation process. According to the query of CET-4 and CET-6, all invigilators wear personal invigilation cards to participate in this invigilation task. All invigilators are familiar with the training materials and invigilation process of CET-4 and CET-6 in advance (attached). It is forbidden for invigilators to bring their mobile phones into the venue and publish the examination contents online. If it constitutes a crime, criminal responsibility will be investigated by judicial organs.