Upright, uptight leader of the Lan Clan. He's intelligent, thoughtful and a bit of a bore. QiRen loves his beard and hates Wei Wuxian, mostly because WuXian's mom chopped off his beard when they were students together. Oh, and because WuXian is definitely corrupting his nephew (and star student), WangJie.
"There was a virtuous and prestigious elder in the GusuLan Sect - Lan QiRen. Everyone in the cultivation world accepted three characteristics which described him: pedantic, stubborn, and a strict teacher who produced outstanding students. Although the first two points kept a lot of people at a respective distance to him, some even to the point of secret dislike, the last one made them try everything they could to send their children to study under him."