The Three Kingdoms is a restless stage. Heroes from all walks of life don't know where to go. After entering Liu Bei's company, they may run to Cao Cao's company. Maybe they can't stand it when they enter Dong Zhuo's company, or they quit. There are many such people, and they hope that they can find a master who truly cherishes themselves, or have a real future.
A vivid example is Lu Bu, but besides his superb martial arts, he also has many shortcomings in life. He was very rude to his former master and killed his adoptive father Dong Zhuo, so he was also called disloyal. But some people are more "swinging" than Lu Bu, but no one says.
Chen Deng and Chen Gui are definitely more dominant than Lu Bu. They belong to a big family, and the children of a big family belong to a family, so it is impossible to be truly loyal to any master. At first, Chen and his son were mixed together, but after his death, Liu Bei took over the position of Xuzhou shepherd, so Chen and his son became Liu Bei's company.
When Lu Bu drove Liu Bei away, the two of them became Lu Bu's people again, but interestingly, they also beat Lu Bu, but Lu Bu was kept in the dark until his death. Later, Chen Deng and his son took refuge in Cao Cao, but they would not be called "three surnames slaves" because they were loyal to the family.