What is the CET-4 and CET-6?

If college English tests were a video game, the CET-4 (College English Test-4) would be entry-level and the CET-6, hero mode. While some players pass and move on, others keep replaying for higher scores to unlock better loot—like jobs or scholarships. So, is this drive for a high score a genuine passion for improvement, or just academic FOMO? / To thank or not to thank AI (14:28)? On the show: Niu Honglin, Steve & Yushan