To put it simply, if Guo Haishen were to join a small stronghold, it would be enough for the chief there to abdicate on the spot.
If he joined a stronghold with tens of thousands of lackeys and the chief did not give him the top five or even the top three seats, that chief would be mocked by the world.
This was the effect of making a name for himself.
According to Zhou Jing's understanding, the Green Forest was recruiting people just like how businesses would recruit partners.
The partners had to be either famous, capable, or had power, money, or connections. They had to get involved to fill the gaps in the business.
As for Guo Haishen, he could be considered a top partner with an extremely high reputation. With this person joining the stronghold, their reputation would increase greatly, and one could automatically obtain a series of "Buffs" such as "Recruitment Increase", "Hero's Arrival", and so on. He was like a flag with a halo effect.