Huangfu Hanyu thought he had wiped everything clean, but as long as someone did it, traces would always be left, not to mention there was a living person like Yang Kuan involved.
Huangfu Yuxuan had been plotting for so long and would not give him a chance to turn things around. If he wasn't sure of a direct hit, he wouldn't have chosen to launch his attack at this time.
First, Prince Liang's cries for injustice, then the evidence found by the Capital Governor pointed directly at the Crown Prince, followed by Yang Kuan falling into the hands of the Capital Governor...
He had calculated every step.
As for the evidence, some were found by his subordinates, some were obtained by enlisting the help of Jianghu people, specifically those from Haotian Village, and some were fabricated as plausible false evidence based on the situation at the time.
