Ling Qingyu suffered for nothing?!
He probably never expected his allies had given up on him. Actually, they were more in trouble themselves, caught in the net laid by Yang Qingyue's Operation SkyClear. They were busy saving themselves.
Plus, did he really think dirty officials would leave him alive? They were already considering to cut off any clues. If necessary under Yang Qingyue's request, Tang Ziyi could provide a safe zone throughout the trial for a smooth judicial process. But why should she care about these?
Tang Ziyi and Xiao Yue might respond without hesitation if the people involved were important witnesses and victims, who were in danger of being silenced. They weren't saints but they still retained the bottom line of a human being to help those in need. For the criminals, it was the greatest blessing if they didn't take action to kill them, themselves.