The Middle-Aged Man takes a boat to Sang Island at least twice a year. The route between Sang Island and Greater Wu is very safe, and the profits are impressive.
Leroy used a Communication Talisman to ask the Middle-Aged Man, who replied: "The Fallen Sky Field is said to be the divine kingdom of one of the great deities of Sang Island, the Lord of Time. He is in control of the passage of time and likes to hide in the subtleness of it, so people from Sang Island always say that time passes unnoticed."
As for the location of the Fallen Sky Field, it is not mentioned in the legends, and I've never heard of it in Sang Island, nor any connection to the Rakshasa Sea."
"Regarding the Rakshasa Sea, just like us in Greater Wu, Sangdao people also have various terrifying legends. One of them says that the Rakshasa Sea is a boundary for the mortal world. On one side of the boundary is the world of ordinary people, and on the other side is the world beyond the imagination of mortals."