[X] Shenglu
The meanings in Yun Cai are nice but this is going to be our city, the Ling capital. I don't really want to name it after our patron. Also, Cai is just Ren Rens last name. It doesn't really seem like something we could tease her with or that she would even be particularly surprised by because (1) when people think Cai they're going to think of the family. i.e if a town were named Yun Meng people would think of the Meng clan not of Meng Dan and (2) it's the most normal and boring thing in the world to name a frontier town after it's patron. For example, American states like Virginia, the Carolinas, and Georgia were named after the royalty that funded it.
Which is... fine I guess. Just kind of boring and takes us, as the Ling, out of the picture in a way a name that's more about the town itself doesn't. I don't want people to come to our capital and be like- oh yeah... The town funded by the Cai. I want them to come and say- oh! The heart of the Ling clan!