1. Student group: Some students may not want to change their mobile phone numbers and want to keep in touch with their friends, so they will choose to use the number in paragraph 159.

2. Business people: This kind of people often need to send business cards. In order not to miss any business, they will choose to use paragraph 159, because this paragraph was widely accepted at the beginning of its launch.

3. Rich number resources: 159 belongs to the number segment of China Mobile. Because it was launched earlier, it has a large number of number resources, which can meet the needs of different groups of people.

4. Digital Geely: In China culture, numbers are given different meanings. Some people may think that the number 159 is auspicious, so they will choose this number segment.

5. Habit problem: Some people may have a special preference for this number segment because they have used this number segment 159 in the past, or because people around them use this number segment more.

It should be noted that the above are only some people who may use paragraph 159, and may not be applicable to everyone.