What is the water in the quicksand photo frame made of?

A floating yarn picture consists of a mirror frame, a transparent glass cavity, a background picture and a backboard. In the sealed glass cavity, unexpected aesthetic effects can be obtained.

It is an art of manually reproducing nature on a two-dimensional plane. In medieval Europe, people often called painting "the art of monkeys". Before the 20th century, the more realistic the painting, the higher the technology. But after entering the 20th century, with the appearance and development of photography technology, painting began to turn to the direction of expressing the painter's subjective self.

Painting is a form of capturing, recording and expressing different creative purposes, and the number of participants is also huge. The nature of painting can be natural and symbolic (such as still life or landscape painting), photographic painting, abstract painting, narrative, symbol, emotion or politics.

Strictly speaking, when you just start to learn painting, you should learn sketch first, generally starting from plaster geometry, still life and painting. You should know the basic elements of sketch, such as shape, proportion, structure, light and shade, texture, sense of space and so on. These nouns seem not difficult, but the concrete operation is really not easy. Here, let's first understand the physical structure and proportion of the head.