It has been years since the last auction he participated in. It would only be natural to have a few more pieces to sell. I mean, their whole safety was based on the Shadow Moon Hall believing there's a grandmaster artifact refiner behind Yang Kai. That grandmaster obviously would be producing more stuff. If he never sells anything anymore, the Shadow Moon Hall, and every one else outside, will think that grandmaster has left a long time ago. That means there would be no business reason anymore to treat the Dragon Cave mountain so well anymore. The desire to seize whatever there is under direct Shadow Moon Hall control would grow. Could it be that Yang Kai has eyes but fails to see such a simple thing?