In the initial stage of the regency, the four regents oversaw the government together and provided assistance towards each other in accordance with the Shunzhi Emperor's dying wishes.
During the early years of the regency, tension between the two Yellow Banners faction and Suksaha was kept in check by Sonin, and the four regents managed to maintain a relatively peaceful and efficient working relationship.
As Sonin took more time off to recuperate, Oboi started monopolising state power by making decisions without consulting the other regents (taking advantage of Ebilun's indecisiveness) and sidelining Suksaha during discussions, especially on issues concerning the welfare of the Eight Banners.
By 1667, when Sonin realised that he did not have long to live, he attempted to restore balance to the regency and neutralise Oboi's rapidly expanding power clique.
However even after officially taking full control of the government, the Kangxi Emperor found it difficult to curb Oboi's growing influence.