 He was also famous for his love of cockfighting , <unk> <unk> ( Vietnamese classical opera ) and court dancing , all of which were popular with the common Vietnamese southerner . He reportedly gave a long speech praising cockfighting , in a joking manner , to Emperor Gia Long and sometimes beat the drum himself in order to encourage the actors and actresses of the <unk> <unk> troupes when they were performing for him . He was also known for his patronage of goddess spirits that were popularly venerated by local southerners in folk religions . In addition , Duyệt was the instructor of three <unk> formalities , a code of ceremonial conduct and customs that were copies of royal rituals . 
