In order to advance the Dragon Crocodile puppet beast to the second-grade intermediate level, Su Yu had invested nearly five thousand low-grade spirit stones in the last two years. Including the original cost of forging the dragon crocodile puppet beast, the pure cost of this puppet had reached 12,000 low-grade spirit stones.
Fortunately, everything went smoothly.
Su Yu stopped his cultivation and looked at the Daoist puppet after its advancement to the second-grade intermediate level.
Its appearance had undergone a significant change; the most obvious one was its height. The secret room, built underground, was about 15 meters high. At this moment, the Daoist puppet fully revealed its puppet beast body, and its height almost reached the ceiling of the secret room.
Its former tyrannosaurus-like form had changed slightly. More spines had grown on the scale armor on its back and tail, densely packed, showing a dreadful sheen under the secret room's oil lamp light.