Zhao Benshan always carries an old man with glasses and a hat with him now. At Ma Dashuai's place, he seems to have let Liu beat A Hao. What's his name?

You mean this guy, right? In "Ma Dashuai 2" and "Ma Dashuai 3", he played the underworld boss Liu Ge, the owner of awei Travel Agency. I checked and found that the names of these two characters and their corresponding actors were not in the final cast of each episode in 2 and 3, but there was a man named Liu Hui (with Wang Fengyou, the boss of Ant God) in the "friendship guest" behind.

As for his true identity, it has been found out that he is one of several vice presidents of Benshan Media.