What photography theories are involved in the theory of "top left"

Principle of pinhole imaging. The external memory theory on the left involves the photography theory of pinhole imaging principle. Zuo Zhuan by Han Feizi is an essay written by Han Fei, a thinker at the end of the Warring States Period. This article is mainly about how to govern the country. The full text is divided into six chapters, which are discussed from the aspects of "advice when most is least heeded", "kindness, reputation of scholars", "setting an example" and "honesty", which are also of great significance and worth learning from later generations.