The Tang Dynasty’s Immortal Master

The Great Tang tutoring class is now in session! Emperor Taizong, Li Er: “Teacher, can the steam engine you mentioned be made even more powerful? I want to build a railway all the way to Europe!” Crown Prince Li Chengqian: “Teacher, could you reduce the amount of land needed to convert pasture into farmland a little more? Lake Baikal really isn’t suitable for growing rubber!” Prince of Wei Li Tai: “Teacher, I understand how ironclad ships stay afloat. I just want to know how much electricity that ship-mounted electromagnetic cannon you mentioned needs. I’m going to make my mark in South America!”