In the morning, the second large class Ming Shuiyun attends is Zhu Yan's "Luminous Stone Alchemy," which, unsurprisingly, runs a little overtime once the bell rings.
It's not that Zhu Yan loves taking up students' break time, dragging a lesson on for a few minutes across multiple classes so it adds up to a whole extra class like some 'genius teacher.' Having taught for decades, Zhu Yan has precisely honed his teaching content to ensure every class ends just as he finishes a chapter, unlike some red-haired teachers who flee at the sound of the bell even if their curriculum isn't done.
The issue is that "Luminous Stone Alchemy" is incredibly obscure and difficult, but there are always several diligent students at the Imperial Academy who want to dig deep into matters. Almost every time, before class ends, when Zhu Yan asks, "Does anyone have any questions?" someone poses a question that Zhu Yan finds "extremely good," leading him to explain a few extra minutes.
