Rennyo is generally credited by Shin Buddhists for reversing the stagnation of the early Jōdo Shinshū community, and is considered the "Second Founder" of Jōdo Shinshū. His portrait picture, along with Shinran's, are present on the "onaijin" (altar area) of most Jōdo Shinshū temples. However, Rennyo has also been criticized by some Shin scholars for his engagement in medieval politics and his alleged divergences from Shinran's original thought. After Rennyo, Shin Buddhism was still persecuted in some regions. Secret Shin groups called "kakure nenbutsu" would meet in mountain caves to perform chanting and traditional rituals.