The first step is to open my world APP.
Step 2: Click on the game.
The third step is to enter a creative world.
Step 4: After entering the game, click on the item bar.
The fifth step is to find the bedrock first.
Step six, then find the last crystal.
Step 7: Go back and find a clearing.
Step 8, put the bedrock in place.
Step 9, take out the crystal.
Step 10, then you can successfully put the terminal crystal on the bedrock.