The ancient empire, immortal Dragon Soul Emperor, the baby girl brought out of the lava pit—everything was shrouded in a mysterious veil. Even though L'Haronne itself was already a mystery, it still aroused Hao Ren's interest when these things came together.
The long-established empire had many secrets.
Curiosity killed the cat, and Hao Ren did not go as far as wanting to unravel every secret. His mission was to find the traces of the Mad Lord's contamination during its last reincarnation and how the world survived. In other words, Hao Ren was looking for a Mad Lord "vaccine", and the secrets of a mortal kingdom's royalty seemed less vital unless it had something to do with the "vaccine". Otherwise, it was not worth spending time on it.