Traditional culture is relatively stable, so is it immutable?

Since it is relatively stable, it must change with the development of the times. The viewpoint of Marxist discovery shows that the unchangeable things in the world do not exist. If they don't change, then it won't exist. For example, filial piety, as one of the essences of China traditional culture, changes all the time, but its essence will not change. In ancient times, it may be more dependent on "father's life", but now it may not be the case. Nowadays, filial piety depends more on children's own development. As long as the personal career is smooth and the family is harmonious, it is the greatest filial piety. If you give your parents more regular greetings and companionship,