Why did Huan Guanlan, who had a good reputation, spare no effort to kill General Zhou, who also enjoyed a good reputation, and even his family?

The conflict between them could be reasonable if they were all civil officials or military generals. However, in fact, one was a civil official while the other a general!

Although Huan Guanlan boasted of being competent to hold the post of either a prime minister or a military general, in light of Emperor Xuanjing's ...