Grandpa Lu did indeed come to Seasons Pavilion looking for Chu Mo to drink on purpose. With his status and position, he normally wouldn't bother with a small establishment like Seasons Pavilion. Today, he must have heard some rumors, and upon learning that Chu Mo was drinking in the main hall of Seasons Pavilion, he made a decisive decision to come over to pay his respects with a toast.
In fact, if Duan Chun's only connection to the Lu family was a business collaboration with Chu Mo, Grandpa Lu, with his status, would have no need to rush over just to toast Chu Mo. After all, there is a generation gap between the two.
However, when you take into consideration Miss Lu Siyue of the Lu family, everything changes.