Lee? Ah! (Was distracted by santu gonger <-> ) https://baike.baidu.com/item/%E4%B8%89%E5%85%94%E5%9B%BE/10784891#:~:text=%E5%AE%87%E5%AE%99%E4%B8%AD%E3%80%82-,

Lee? Ah! (Was distracted by santu gonger <-> ) https://baike.baidu.com/item/%E4%B8%89%E5%85%94%E5%9B%BE/10784891#:~:text=%E5%AE%87%E5%AE%99%E4%B8%AD%E3%80%82-,%E7%BB%86%E8%83%9E%E5%AD%98%E5%9C%A8%E5%9C%A8%E4%BA%BA%E4%BD%93%E4%B8%AD%E4%B8%80%E6%A0%B7%EF%BC%8C%E6%98%AF%E4%BA%92%E7%9B%B8%E8%81%94%E7%B3%BB%E7%9D%80%E7%9A%84%EF%BC%8C,-%E8%80%8C%E4%B8%89%E5%8F%AA https://baike.baidu.com/item/%E4%B8%89%E5%85%94%E5%9B%BE/107... I'm still trying to internalize+merge the other sense of Lagrangian (as in "L submanifold")