Astronomy, geography, physics, chemistry and other scientific theories belong to the ideological products of the subjective world, and each theory is constantly developing and changing, and there are different understandings of each fact. These understandings are often contradictory and opposite, and maybe one of them is in line with the objective reality, while the others are not. Therefore, the understandings conforming to the objective reality are a part of various subjective understandings, that is to say, the objective world is a part of the subjective world.
5.2 Understanding of the Language
Language and words are artificial objective facts. There can be different understandings of the same sentence. For example, Lin Daiyu said to Jia Baoyu, "I'll ignore you forever." This sentence may be angry, joke, may be true. Only one of these understandings is in line with Lin Daiyu's real idea, other understandings are subjective. So objective world is a part of subjective world. But other understandings are also valuable and cannot be easily ruled out.
Language is the most economical means to change other's consciousness and control others.[2] We say a lot of words and read a lot of words every day. There are many understandings of each word and sentence. For all of these understandings, the objective world is a part of the subjective world.
5.3 Evaluation
We evaluate a lot of things every day, every commodity needs to be evaluated, power needs to be evaluated, business and battlefield situations need to be measured, love and emotions need to be evaluated, all kinds of things probably need to be evaluated. Different objective things have different values for people, and different other people have different values for the subject. For the same objective existence of things or people, different people often have completely different evaluation, among which only one or a few kinds of evaluations are objective, the rest are subjective. For these evaluations, the objective world is a part of the subjective world.