1, personal preference: Zhu Guangquan prefers his black hair, and thinks it is a natural and healthy color and does not need to be changed by dyeing it.

2. Professional image: As a CCTV host, Zhu Guangquan needs to maintain a relatively formal and steady image to meet the professional requirements. Black hair is a more solemn and formal color, which conforms to the professional image.

3. Personal values: Zhu Guangquan thinks that appearance is not the standard to measure a person's value, so he pays more attention to the display of inner qualities rather than paying too much attention to the details of appearance.