Well if it is from a swirly, there something I can do. Okay, circle, circle, dot, dot, now you have a cootie shot!

With the helicopter hovering Nose-In, add left cyclic and flip the helicopter to inverted, continue until the helicopter has completed 2 rolls to the left.

The building appearance of the building is just like a batter-fried prawn, Total height about 230, just as two pour " L " oblique to lean together;