As soon as Lu Jinhai got the news that Reaper and Mo Chou's car had indeed gone through the flooded area but wasn't seen after that, he immediately mobilized all the forces under him and used his influence as the CEO of Lu Enterprise as well, to initiate a search and rescue operation.
The area that he had to cover in order to search for Mo Chou was pretty large. The CCTV cameras had all gotten damaged after the flood and landslide had started.
They still recovered the CCTV footage of the cameras from before they got damaged and after watching it, Lu Jinhai roughly estimated the area Mo Chou was most likely to be in and started searching that area first.
They searched for a while but found no signs of her. The flood water had pretty much swept everything away.
Since Lu Jinhai had started searching for Mo Chou as soon as he found out about them heading straight towards the disaster zone, everyone had thought that they had a chance of rescuing her.