The correct answer to this open question is the following.
Under Emperor Wen Confucianism benefited in that it was not only tolerated but respected. But the most important aspect of Emperor Wen regarding religious beliefs was that he was not only respectful of Conficianism but to other religious beliefs such as Daoism, and Buddhism, So he had the "knack" to allow all religious teachings to be part of the empire, creating respect, tolerance, and harmony to unify the large empire.