Could you make a few vassals for Liu Bei? For example, Guan Yu, Zhang Fei, Zhao Yun and Zhuge Liang. According to their official ranks, they will receive corresponding salaries, just like a family business. This vassal relationship will never be terminated by either side. Prohibit Liu Bei and his vassals from all operations in the vassal option of diplomacy. Their diplomatic basic relationship is always set above 1000. Vassals can summon their own troops in any of Liu Bei's towns. Prohibit all factions from making any diplomatic proposals such as declaring war, trading, and forming alliances with Liu Bei's vassals. The diplomatic relationship of vassals with Liu Bei remains the same. Vassals can request Liu Bei to declare war on a certain faction.