With regard to Meng Lei's inquiry, Gabriel the Fire Demon Overlord told him everything he knew and withheld nothing.
The Demon Realm was very big! Unimaginably so!
Even the Fire Demon Overlord couldn't come up with a concrete answer as to just how big it was exactly. All it knew was that its place of residence was called the Campas Wastelands and that it spanned 10 million miles from the north to the south and 30 million miles from the east to the west.
The nearest city was the Magic Wings City. The lord of the city was a true god-level Demon Lord, and he ruled over all the districts 100,000 miles of the city. He was the most influential Devil in the vicinity!
At this point, one must make a mention of Hell's combat prowess classification.