[Water Elevator] ---> [Drop Chute (22 Blocks)] ^ | | v [Spawner Room] ------------> [Kill Chamber]
If you find a Zombie or Skeleton dungeon while mining, you can easily turn it into an automated XP farm. Skeletons are preferred because they also drop bone meal and arrows. How it Works minecraft 1.7.10 xp farm
Because 1.7.10 lacks Off-hand shields, you must build a "Pane wall" – place glass panes with a 1-block gap. Blazes can shoot you, but their fireballs hit the panes. You can punch their feet through the gap safely. [Water Elevator] ---> [Drop Chute (22 Blocks)] ^
Endermen give than other mobs. And in 1.7.10, endermen spawn like crazy in the End. Blazes can shoot you, but their fireballs hit the panes
If you're comfortable with the dangers of the Nether, a Blaze farm is another fantastic option. Blazes drop double the XP of most standard mobs and are essential for brewing potions. To build one, you need to locate a Nether Fortress and find a Blaze spawner. The basic principle is to enclose the spawner, use pistons or player bait to funnel the blazes into a kill chamber, and dispatch them (a potion of fire resistance is highly recommended while building).
These designs can be modified and improved to suit your specific needs and preferences.
There is a specific, almost sacred version of Minecraft that floats in the collective memory of its aging player base: . Not 1.8 (which changed enchanting and sprinting), not the combat-update 1.9 which broke the old gods of sword-blocking, but 1.7.10. It was the last stable version of the "old world"—a final, frozen snapshot of an era before the meta became fractured.