Cultural heritage values are relatively stable and persistent. But they also change with changes in a social environment, personal outlook on life, and world outlook. Due to social status, cultural differences, interest relationships, etc. , people's cultural heritage values are different in different ways. The time, place, and occasion will show great differences. The cultural heritage values of the government may depend on decision-makers. The cultural heritage values of cultural relic workers usually show relative advancedness, enthusiasm and stability. The cultural heritage values of the general public are Depends on national policies, social opinion orientation, personal cultural quality and other factors. What does this text mainly talk about? ['Reasons for changes in cultural values.', 'Pros and cons of different cultural values.', 'Different expressions of cultural values.', 'Reasons for differences in cultural values.']