Why is China's excellent traditional culture an important source of socialist core values?

Hello, I would like to ask why the title says that China's excellent traditional culture is an important source of socialist core values. Chinese excellent traditional culture is the spiritual lifeline of the Chinese nation, an important source of cultivating socialist core values, and a solid foundation for us to gain a firm foothold in the world cultural agitation. Throughout the traditional festivals in China, all of them are condensed with the history of national development, the essence of humanistic thought, the genes of traditional virtues and the power to forge ahead. People's favor for traditional festivals is the recognition of excellent traditional culture and the embodiment of cultural self-confidence.