How to get into the rocket warehouse in Pokemon Leaf Green?

Is this the rocket warehouse in Wudao?

After entering, turn left and take the conveyor belt above; Go straight up; See two conveyor belts on the right and go left; Go up, go to the box, go left, don't step on the conveyor belt, go up, then go right, go to the far right, go straight along the conveyor belt, and then go up, there will be enemies waiting for you. ...

Look at this if you don't understand.