Nether System's Central Region
As Ye Qinjing returned to this location, he noticed his father activating his Time Domain. He was startled to see his father employ Time Element, even though it was smaller than his domain, because he knew that Time was not his father's major Element. Someone's Primary Elemental Domain can include the whole globe, particularly for the larger worlds like Vearth. Ye Xiajie recognized his arrival the minute he emerged in the Nether System. No one can escape his sense to whoever is in the Nether System until he is preoccupied.
Ye Xiajie had spoken, "You're here. Wait for a bit. I need to maintain this domain for a while."
"What do you need this Domain of Time for, Emperor Father?" asked Ye Qinjing.