Generally speaking, in your personal introduction, you can include the following information:
1. Name: Your full name.
2. Gender: Your gender
3. Age: Your age
4. Native place: Where is your hometown?
5. Education background: your education background, major and graduation school, etc.
6. Work experience: your work experience and industry, etc.
7. Skills and specialties: Your skills and specialties, such as language skills and computer skills.
8. Contact information: Your contact information, such as telephone number, email address, micro signal, etc.
When filling in the contact information, you can choose to fill in your usual contact information, and pay attention to protecting privacy. If you like, you can also indicate in your personal introduction that "you can contact me in the following ways" to make it easier for recruiters or hometown contacts to contact you.
Generally speaking, whether to fill in the contact information depends on personal wishes and needs.