Completing such a task would grant a small pet or a fabrication blueprint.
Mechanical pets are already rare, and the tasks to get them are even rarer.
When Li Yao got a fragment, it was just a part of the task item. He had to collect all three to truly trigger the task.
Moreover, the fragments' drop isn't constant, and it's a world-rare drop. Furthermore, it's bound to the individual, which makes gathering all three fragments quite a challenging task.
To illustrate, Li Yao, in his past life, spent a decade to complete this task only once. This shows how rare it is.
Having a mechanical pet, which can only be obtained by such tasks, is genuinely a thing to boast about.
However, when a blueprint of a mechanical pet reaches Li Yao's hands, it is no longer just a pet. It becomes a mechanical combat pet, with its value becoming immeasurable.