C250 You Believe Me
Shen Xiulin and Dongfaang Xian were inside the array, so naturally, nothing that happened inside the array could escape their notice.
Of course, it was because Dongfaang Xian was the controller. He knew, and he wanted Shen Xiulin to know that he needed to know too, just by thinking about it.
Thus, Shen Xiulin and Dongfaang Xian were both aware of it