In the HAUNTED VILLA chapter of the LUK SIU FUNG saga, we are introduced to the siblings Yip Goo Hung, Yip Sheut, and Yip Ling - cousins of the Lord of the White Cloud Manor, Yip Goo Sing. Although their cousin was slain by Sai Mun Chui Sheut, none of the three ever expressed a desire to avenge their cousin. Why not?