Lin Binbin transmigrated to a world of beast tamers, becoming a seven-year-old child. It sounds pretty good, except his grandfather backed the wrong side and was beheaded. Overnight, Lin Binbin became the grandson of a disgraced official and was forced into exile, where he could only do the lowliest work, until he activated the System.
Other people had spirit beasts like spirit turtles, King Kong, and fire phoenixes. Lin Binbin's, however, was forged entirely from black iron and equipped with a high-powered laser cannon. It could kill gods and demons alike without batting an eye. Its only drawback... was that it was a bit of a gas guzzler.