The Trade in You Yang
He currently has a good relationship with Gongsun Zan and can engage in mutual trade in the future.
Gongsun Zan in the north has many war horses, but lacks long spears. Because Youzhou is a harsh land with extremely scarce iron ore resources.
While in the south, Long Chen has fewer war horses, but many long spears. This is because the terrain in Yangzhou is rugged and uneven, with few plains, resulting in few war horses, but extremely abundant iron ore resources.
This also leads to Long Chen having a large number of stored long spears.
At that time, the two lords could complement each other's weaknesses.
After all, Youzhou and Yangzhou are separated by tens of thousands of miles, very remote, and not the main opponents of Yangzhou. Gongsun Zan's opponents are people like Yuan Shao in Jizhou.