C1008 But i have a clear conscience

Guan Ying died, the Guan Family's parents identified Su Haofeng and Ye Jia Qing as the killers, but in front of strong and solid evidence, how could they convict them? The truth was clear, it was Guan Ying who kidnapped them first, they also did their best to rescue his, and in the end she had chosen to commit suicide himself, if she hadn't insisted on falling down, he could have been saved