The Great Emperor of the Immortal Kingdom, Starting from the Pseudo-Prince

The father who failed to change his fate and was killed, the mother who fantasized about having the throne for her son to inherit, the man who slapped the frog in the well in the sky. In order to save a cat, a young boy named Kai Zhangzhao drilled a hole into a hole and inexplicably became an imprisoned prince. Catching rats and insects all day long to feed himself, the situation is difficult to describe in words. Think this is terrible? The tragedy is still to come, the treacherous and powerful minister actually allows the whole family to marry each other. It's my sister who is having the wedding ceremony tonight, what should I do? I'm a jerk!