Compare real rockery with plastic rockery, and discuss their advantages and disadvantages.

After the completion of the real rock rockery, it is more realistic, very close to the natural landscape, and it is more difficult to build, the reinforcement measures are difficult and the construction speed is slow. Plastic mountains are easier to build and can develop infinitely according to the builder's artistic thinking. The appearance of the product is not as good as the real stone mountain, and it lacks the sense of perfection of nature.