Tang Kingdom and Zheng, Jin, and Xu have started fighting. This news, when it was passed back to Great Liang, surprised Lu Yuan a bit.
For the past two years, he was always the one initiating the attacks, while other nations were passively on the receiving end, which created a kind of delusion and inertia in him.
That was the notion that it's only I who will attack others, and others will not come to attack me, or to initiate an engagement by themselves.
At this moment, a great war in Yuzhou made Lu Yuan suddenly realize that other states also actively initiate wars.
Thinking about the disposition of Tang Kingdom and the pressure Great Chu had exerted on other countries over these two years made the outbreak of this great war seem reasonable.
So, after his moment of realization, he understood.
Immediately after, he began to contemplate whether he could reap some benefits from this situation.