Looking at the task details, Song Jian fell into deep thought. It seemed to be an open-ended task reward. If he chose to hand over the Soul Crystal to Situ Kaiss, the task would probably end there, and the reward would be Situ Kaiss's NPC friendship. The task description mentioned a certain chance of obtaining the Mechanical Flesh Puppet Beast blueprints, but Song Jian estimated that getting them directly would be very difficult.
The key issue was his renown with Situ Kaiss. By handing over the Soul Crystal to him, he could initiate a personal renown system with him. Afterwards, he could accept some other side quests from Situ Kaiss to increase their mutual renown. Once their renown reached a certain level, he would be able to purchase or obtain the Mechanical Flesh Puppet Beast blueprints through other means.