After Su Xiaoxiao had voiced her stance, Qin Changqing did not obstruct the communication of the surrounding news.
If Su Xiaoxiao had chosen to act, he would have activated the nearby Great Array, sealing all in its reach, leaving Su Xiaoxiao unable to even send out news.
Since he already knew of Su Xiaoxiao's intentions, Qin Changqing had long since prepared a trap.
If she had taken action, she would have already been captured by Qin Changqing.
But since she did not choose to act, Qin Changqing's attitude towards her took another form.