(1) Berne Convention includes five replication modes, namely stereo-to-stereo, plane-to-stereo, stereo-to-plane and plane-to-plane, and carrier-free replication. However, in the application of copyright law in China, there are not so many ways. From the current application situation, there are mainly two kinds, plane to plane and three-dimensional to three-dimensional, but there is generally no limit to the replication of plane to three-dimensional and three-dimensional to plane. For example, Article 22, item 10 of the Copyright Law stipulates that copying, painting, photography and video recording of artistic works set up or displayed in outdoor public places are reasonable use.

(2) the defendant's behavior should belong to the copy from three-dimensional to three-dimensional and the copy from three-dimensional to plane. For the sculpture itself, we only need to emphasize the result, that is, the copy from three-dimensional to three-dimensional is the copy from three-dimensional to plane for the poster. Although it is reasonable to copy and draw according to Article 22 10 of the Copyright Law, the defendant's behavior has gone beyond the scope of copying and drawing, and it is illegal to seek benefits through copying.

(3) Temporary replication, that is, caching, is still a controversial issue. However, I personally think it is not genuine. Because the current technology simply can't realize watching movies online without caching. This is also stipulated as a legal copy, which can be said to be overwhelming.