Most people consider the cost before committing a crime.
When the cost becomes unbearable, the probability of committing a crime naturally diminishes. Many rely on their seniority and act shamelessly because the benefits gained from such shamelessness far outweigh the costs of punishment.
Understand one principle, and many methods become clear.
Shen Yue could deduce the causes of many worldly problems using this principle, yet it seemed a bit inexplicable when applied to Crown Prince Zhao Huan.
The cost of Zhao Huan's crime was incredibly high — was he gambling the position of the Crown Prince to remove Shen Yue? And then force Zhao Ji to abdicate?
The true purpose of clearing the Minister's cabinet has never been about cleaning the treacherous ministers, but rather wielding the banner of the people's name to force the indecisive emperor to step down for one's own benefit to ascend the throne.
Acting in others' name is mostly for oneself.