C812 Timing 'bomb

At the same time, on the tenth floor.

After Qing Shaoyu let Tang Shuixin follow Tang Shuiyi upstairs, he immediately rushed to the surveillance room on the tenth floor.

As Yan Leehsing had to pretend to stay behind in another area, he handed the responsibility of the entire process to Xiaoye in the monitoring room.

And Xiaoye was taught by Yan Leehsing