The nobility of the kingdom of divine light is divided into five grades. The rank of Duke, concubine and male is gradually lowered. However, few people know that besides these five nobility titles, there is also the sixth rank of jazz. This is the highest reward that the common people can get, and it is the only way to get into the nobility except intermarriage with nobles. However, the conditions for obtaining this title are extremely harsh, and it takes at least two times to save the country to get the title. In the 1780 year history of the Kingdom, only one person has won the title, which was conferred by Jacques Xi, who was the chief cook of yak Xi. It is said that not only did he discover the despicable act of poisoning the water by the enemy, but also his wonderful cooking skills made the energetic YAC Xi win more and more battles on the battlefield, expanding the territory of the kingdom to the present level. So the Royal cook was given the title of knighthood, and was hereditary. It is now the 33rd generation.