What is the top-to-top shooting method?

I'm not sure, but according to the analysis of online data, it should be the method of indoor shooting, and the exterior picture is painted on the glass and superimposed on the film.

The information is as follows

The photographer of Burning Red Lotus Temple is Dong, who was called george lucas in the 1920s. He not only created the method of "touching the top", but also skillfully made the top of Honglian Temple and the scenery without the top painted on the glass plate into a complete and brilliant Honglian Temple building. He also expressed "sword-light fighting" through the fusion of real characters and cartoon images, arbitrarily zoomed in and out the characters on the screen, and even completed the trick photography technique of "two places at once".

People from Ningbo, Zhejiang. In his early years, he entered the star film company to study fine arts, and later worked as a photography assistant. 1924 independent palm mirror. I have been filming for forty years, and I have made two or three hundred films. When shooting the film "Good Brothers", it was the first time in China to use the method of two exposures to shoot a scene in which an actor played two opposite roles. He also found a solution to the "top-to-top" shooting method and successfully shot the location in the studio. At the same time, it is the first time in China to shoot stunt shots such as walking on clouds, climbing over walls and people getting smaller and bigger in martial arts films by means of lens head and picture synthesis.

It should be, hehe, think for yourself.

There is really little information on the internet.

I hope it helps you.