Was the infighting between factions that intense like the Advisor's Alliance depicted?
When I read Records of Three Kingdoms, the biographies give me a vibe that even though Cao Pi and Cao Zhi were competing for the heir's position for a while, it was nowhere near as intense as the Advisor's Alliance depicts or most of Cdramas where both sons plot to kill each other, and there are also shit load of people with high ranks supporting each faction. Also, Cao Cao was quite clear with his intentions of making Cao Pi his heir, such as his conversation with Jia Xu, who subtly hinted to him that not making the oldest heir would lead him to end up like Yuan Shao and Liu Biao; and Cao Cao laughed and then was determined that Cao Pi would be a good choice. How did the "competition" between Cao Pi and Cao Zhi look like?