Why did Qianlong value the mechanical devices made by Jesuit missionaries?

The Qianlong emperor valued the mechanical devices constructed by Jesuit missionaries primarily as a source of intellectual satisfaction and as a means of creating amusing objects. While he held a high regard for the skill and knowledge of the Jesuit fathers who built these machines, he did not view them as essential technological advancements for the state, treating them instead as novelties for his personal enjoyment.1