Wang had been removed from his position as Editor-in-Chief, IEEE Trans on Intelligent Vehicles (https://ieee-itss.org/about/officers/past) prior to this; and IEEE has investigated multiple T-IV articles involving Wang:

  - https://ieeexplore.ieee.org/document/10486832
  - https://ieeexplore.ieee.org/document/10490245
  - https://ieeexplore.ieee.org/document/10499903
  - https://ieeexplore.ieee.org/document/10356797

So those retractions (seem to be peer review related) combined with the removal from the position of Editor-in-Chief, suggest something along the lines of editorial interference/manipulation of peer review.