It's a duel of Luk Family patriarchs from ROCH.
We have Luk Gwoon Ying from ROCH, now a middle-aged adult and a wulin leader, taking over the responsibilities of his late father, Luk Sing Fung vs. Luk Lap Ding, the father of Luk Mo Seung, before he died at Lee Mok Sau's hands.
Which Mr. Luk wins this duel?