How can the survey data of the behavior of low-headed people be obtained?

The survey data of the behavior of low-headed families can be obtained through the following channels:

1, you can sample the streets in the listing center and record the number of low-headed families and the total floating population in a certain area within a few hours.

2. Send a questionnaire in a circle of friends and let friends fill it out. Specific content can be set questions or psychological tests.