This is not a palace fight, but a dimensionality reduction attack. When Yu Ying'er was no longer willing to be a chess piece, the entire rules of the Forbidden City were completely subverted. Poems and songs? Not as good as a boiler pressure parameter. Conspiracy? No match for a steel artery. Using singing as bait and technology as a blade, she rose from a humble official to the head of the "Road Mansion" who holds the lifeblood of the empire. Yongzheng relied on her, feared her, and was ultimately tied to her in this torrent of alternation between the old and the new. The dragon chair and the carriage rails, imperial power and technology, engage in a thrilling game in this last feudal dynasty. When she forcibly pushes the wheels of the empire onto another track, everyone will eventually understand that what she brings is not only change, but also a future that cannot be turned back.