A special effects technique was used in the early Star Wars.

After shooting the film with a blue screen, look at the different colors of the film, carve it directly with a carving knife, and then remake it twice. This technique is a traditional special effect, also known as early film special effect. ...

This kind of film special effects and early subtitle lettering can be regarded as female compatriots. ...

It seems that King Kong was the first to use this technology ... not a remake. China's 86th edition of The Journey to the West also used some of the special effects. For example, the Monkey King or other characters are all in the clouds.

There's another movie like the ending of Stephen Chow's movie "The Master of Wulin Su", which is called remake. After shooting several layers of actions respectively, they are superimposed and copied.

And projected on the scene curtain ... such as the driving scene commonly used in American movies in the 1940 s and 1950 s ...