Yeah. I don't know what his angle is, but he definitely has something else going on... I don't think he's just Kind Old Neighborhood Grocer with a fistful of wise aphorisms (I really like that he was throwing out lines from Steve Jobs and whoever, not just Confucius and Sun Tzu).Oh, thank God, I thought it was just me. He's got some skeletons in his closet, I think. Note how easily he figured out what Kai was up to with the poison. How many grocers would put those pieces together?
I don't know if he's Enlightened, or a Secret Immortal, or what. But I think he's aware of enough legends or Secret Truth to have an idea what Kai is, and he probably remembers enough about his meeting with Uncle Six in the hospital that he's sniffing around for (I think) selfish purposes.
But yeah, I suspect he's figured out that the Guo (?) Venom means that Six's Wu powers may be up for grabs.
I should have kept the subtitles on. Are the tortoise shell McGuffins called Wu Jing? Wu Xing?