Si Yiyan had already prepared the helicopter beforehand and established a cooperative relationship with the military when the abductors requested for the helicopter. He then planted a trap in the helicopter.
The abductors did not expect there to be another bunch of people trying to save Wen Xinya. Hence, they let their guards down at the instant they boarded the helicopter. Besides, the military's efforts at tugging the helicopter down had distracted them. Si Yiyan instructed the pilot to deliberately jerk the stick so as to make it easier for Wen Xinya to escape their clutches.
After Wen Xinya was rescued, the abductors were undoubtedly arrested.
If he had not promised to hand the abductors over to the military, he would definitely not let them off.
Si Yiyan burst into laughter upon sight of his subordinates throwing the abductors down onto Xu Zhenyu, who ended up in a disheveled state.
Yes! Not bad! Very competent!