1. there is a gray square on the marble. Click the following section and the 12-cell password box will be displayed. Based on the clues in the book, you can open the authority according to the red line shown in the figure below, and then get something similar to the door handle.
2. Then go to the unit on the left of the marble and slide to the left and right sides (as shown in the figure below). After the unit is opened, place the item obtained in the first step.
3. Rotate the wheel clockwise and get a Amethyst on it.
4. Move to the right of the marble, move the button in the slot to the right, and then slide up. After the dark door is opened, put the amethyst you just got in. The top of the right bar emits a dazzling purple light.
5. Then the plane will fly in, and a picture will appear on the handheld computer. The green button will display three symbols, which will be used later. Also, do not forget to take the item next to the character above.
6. The front of the bar on the left is a puzzle game. You need to make each disc have only one color.
7. Click the red square in sequence according to the numbers shown in the figure below, and then get another item that looks like a key.
8. Go to the right of the right bar, insert the key item, rotate it counterclockwise, and slide the three slide to the other side.
9. according to the three symbols on the handheld computer, make these three symbols appear in the correct position. Note that the direction of the symbols may be different, as long as the symbol shape is correct, then you will get another sapphire.
10. Go to the left-side Portal bar. There is a cylindrical column, rotate it, and place the sapphire in. The blue light shines on the top of the Portal bar on this side.
11. The right of the marble is opened. First, click the Pentagon button, and then rotate the green triangle to the bottom. The green light in the upper right corner is on. At this point, the second part of the aircraft mystery about the portal is over.