Travel Through the Tang Dynasty and Be an Idle Prince

A somewhat bad 985 science and engineering student accidentally traveled to the Tang Dynasty due to an operational error during an experiment and became a marginal prince. However, he is not obsessed with fighting for power, he just wants to be a free king. But this doesn't seem to be easy. Let's see how he uses his extensive knowledge to make a good life for himself! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.