How to do My World and Portal of the Ancient World?

If you want to build a portal, you must first synthesize the blueprint, and pay attention to finding a large open space when placing the portal.

Blueprint:

Amethyst ingot Amethyst ingot Amethyst ingot,

Amethyst ingot? Diamonds? Amethyst ingot,

Amethyst ingot Amethyst ingot Amethyst ingot.

After making the portal, you need to stand in a large open space, hold the portal blueprint, and right-click the square standing under your feet.

You will find a monster, and then you need a material called "Ancient Pure Gem".

Ancient pure gems source: automaton? Chrysanthemum? Vampires? Rock spider.

See the place opposite the blank door looks like a small door panel standing up? That's where ancient pure gems are placed. At the small door panel, you will see a threaded square with an ancient pure gem in your hand. Right-click it.