This is very simple, because the scale of PICC P&C has reached the secondary institution, so it can become a branch.
PICC Life Insurance is a small company. It has been established for a few years, and the scale of the prefecture-level organization is not up to the second-level organization, but only the third-level organization, so it can only be called a company in the center.
Organization setting of insurance company:
Head office-branch-central branch-branch-business area (department)
Further reading: How to buy insurance, which is good, and teach you how to avoid these "pits" of insurance.