The image is a slide from a presentation on the study of shape. The slide has a black background with white text. The title of the slide is written in Chinese characters at the top. Below the title, there is a subtitle in English that reads "Study of shape". 

The slide also mentions that after thousands of years of development, the form of jade objects have evolved in a most abundant and fruitful way. The various manufacturing methods became popular, and new ways to save energy and resources. Some objects were formed from larger pieces of unused jade material. Some of the materials were made from various materials, such as wood, metal, and plastic, and some are made from other materials.

There is also a note at the bottom that explains that the study was conducted to investigate the work sequence in which jade object was crafted and rediscovered its evolution.