Weight Distribution of external links

Seo manager believes that in Baidu's algorithms, different links are allocated with different attributes and different weights. Which are:
1. Recommendation Link
Links are recommendation links, and mutual recommendations are made for the same website. Weight export rating: 5 stars
2. Related Links
A hyperlink is related to the content and topic of the page. The weights are exported to four stars.
3. Extended links
It refers to some reference links set up to provide users with a wider range of materials, such as the inner links in Baidu encyclopedia on the page. Extended links are the links in the articles we often talk about. The weights are exported to three stars.
4. Reference Link
For example, the reference link at the bottom of an Academic Thesis page about the document reference. Weight Export 2 stars
5. Ad links
This is a hyperlink for commercial interests. For example, the link displayed in the form of images on the following page exports the weight of one star.
6. Service Link
It refers to a hyperlink for the purpose of service. Such links do not involve transactions. For example, the service link in Baidu encyclopedia on the page is Baidu Complaint Center, and Baidu knows the help link below. The weight is exported to half a star.