Yu daban was the most loyal to the Jade Wyrm Dragon because the eunuchs in the palace were equivalent to the servants of the royal family. However, these servants were also assigned. Yu daban was assigned to the Jade Wyrm Dragon's side and grew up with the Jade Wyrm Dragon. Naturally, he became a member of the Jade Wyrm Dragon's faction. When the Jade Wyrm Dragon soared, he would also rise with the tide. If the Jade Wyrm Dragon lost its power, he would naturally have no hope.
Furthermore, for a eunuch like Yu daban, he could not change his master because he had watched the Jade flood Dragon grow up. The other princes also had their own eunuchs by their side, so naturally, they would not want him. Therefore, Yu daban was naturally extremely loyal to the Jade flood Dragon.