Da Qin: I Asked You to Supervise the Country, but I Didn't Let You Ascend the Throne!

He traveled through time and became Ying Zheng's son. He broke off the engagement at the beginning and was transferred to the frontier to become the leader of the country. Ying Jing originally thought he could be free and unrestrained for once, and be a happy prince. But he didn't expect that his territory was actually a place where birds didn't poop, and... The only system that gave Ying Jing some comfort turned out to be a scam! ! !