According to legend, a young man established the Caiyun Kingdom with the help of the Eight Colorful Immortals. Therefore, the territory of the Caiyun Kingdom was divided into eight states: Red State, Yellow State, Bizhou, Blue State, Purple State, Black State, White State, and Tea State. The king at that time ordered the wealthy families in each state to use these eight colors as their surnames, and prohibited civilians from sharing the same surname with these eight tribes. Therefore, people with these eight color surnames meant they were nobles among the nobles.
Everyone in the world does not know that besides the Eight Immortals, there is the Ninth Immortal, who also helped the legendary king to found the Caiyun Kingdom. However, the Ninth Immortal did not like fighting or strategizing, but only liked traveling around the world. Therefore, when recording, the King deliberately concealed the Ninth Immortal. ． ． ． ． ．