If you say there's no trace of Emperor Jing behind this matter, he definitely wouldn't believe it.
If Emperor Jing didn't indulge, didn't tacitly allow, or didn't find a reason in advance, how could Lao Liu have such authority to execute people?
"I probably entered the Fate Palace Realm in the 14th year of Da Zhi."
"At that time, I no longer went out freely," Liu Tianning said. "I became First Grade, my strength surged again, if left unchecked, there might be a day of complete loss of control."
"His Majesty also took away my Inspector role, ordering me to stay well within Shangluo Academy, only sending out avatars to conduct activities, primarily handling internal affairs at the academy as the Minister of Sinong Dao."
Zhao Xing nodded; a Second Grade Liu Tianning could still be said to be within controllable limits.
If he was to go mad and attempt... let him be ready. Emperor Jing didn't care because he could completely control the situation within a certain scope.