By the time Andrew left the Robertson residence, it was already evening.
After running around all day, he first went to Iron Sword Sect, where he spent half the day talking in circles and taking all kinds of risks. Then, he dealt with the Robertson family. That part, at least, was not too bad. Once he understood what they needed, it was not hard to get a grip on the situation.
Vernon had hit a bottleneck in his cultivation and was getting old. That meant he was practically waiting for death.