Does Xiangyang driver's license b2 need to be tested when it is transferred to other places and then back?

The transfer of driver's license does not require an exam, just an account or residence permit.

Then, apply for a driver's license transfer to the vehicle management office at the transfer place. The required materials include ID card, driver's license, physical examination report (general physical examination can be conducted at the vehicle management office), one-inch bareheaded recent photo (photo can be taken at the vehicle management office), and residence permit (not required for local hukou). The procedure is very simple. Generally, you can get a new card within one day, not more than one week at most. It only costs tens of dollars.

According to the provisions on the application and use of motor vehicle driver's license (version 20 16), article 58

Motor vehicle drivers whose household registration moves out of the original jurisdiction of the vehicle management office shall apply to the vehicle management office for replacement. Motor vehicle drivers living outside the jurisdiction of the vehicle management office may apply to the vehicle management office for a new card.