Du Chuke , however , pointed out that while Du Yan was responsible for their older brother 's death , he was an uncle .
Du Chuke asked Du Ruhui to intercede on Du Yan 's behalf , and Du Ruhui initially refused .
Du Chuke , however , pointed out that while Du Yan was responsible for their older brother 's death , Du Yan was an Du Yan .
Du Chuke asked Du Ruhui to intercede on Du Yan 's behalf , and Du Ruhui initially refused .