During the Sui Dynasty's campaign against Chen, someone reported Gao Xi's rebellion to Yang Jian. Yang Jian killed the person without asking the reason.
The principle is the same.
Now that Zhang Ju had reported that Wang Meng wanted to stand on his own, and Wang Meng had monopolized the power of the three states in the rear, whenever Huan Xi showed any suspicion, the rumors created by those who hated Wang Meng would drown him.
As I said before, I don’t know how much evidence the Guanzhong gentry could concoct for Wang Meng to support himself.
I don’t really think that the noble nobles would like to see a humble man shouting at them.
In this case, knowing Wang Meng's loyalty, I firmly support him.
Then wait until you return to Guanzhong and take control of the power, then pursue the investigation.
Rather than you still in Jiangling, start preparing to investigate your left-behind ministers in the rear.
Furthermore, if you were Wang Meng and Huan Xi, who said they trusted and respected you, but then turned around and became suspicious because of a false accusation, would you feel cold?
It would be a sign of low political wisdom to really keep Zhang Ju behind and investigate what happened.
Because you are in Jiangling, and Wang Meng relies entirely on your support to subdue the nobles.
If you show distrust of Wang Meng, the nobles will definitely fight Wang Meng to the end. By the time you return, the rear will be in chaos.
There is also the fact that Wang Meng was framed not in the name of leaving his post without authorization. If you leave without authorization, it means that you don't necessarily think that he is framed by Wang Meng. The essence is still distrust of Wang Meng.