Journey to the West: I Started by Beating the White Bone Spirit and Got Ten Thousandfold Returns

Civil servant Tang Xuanzang woke up one morning to find that he had transmigrated into the world of Journey to the West. To make matters worse, a woman called the White Bone Spirit was right in front of him, clamoring to kill him.

Luckily, at the critical moment, he awakened a System that returned rewards ten thousandfold.

Only...

Why is there something a little off about this System?