Right now, Satan is in a loose yet tight state.
Satan's people aren't gathering together, because if they're truly being watched, gathering only provides a bigger, more conspicuous target with no other benefit.
Being vigilant is a must. Once the cleaners notify them that something's going wrong, Satan's people assure Gao Yang that they can evacuate immediately. Gao Yang has confidence in this, irrespective of what happens — even if the cleaners' firewall gets breached, there's absolutely no problem in getting them out.
No matter how confident he is, it's impossible not to be a little anxious. If he wasn't worried at all, Gao Yang would've taken Yelena to stay at a hotel, but for now, he's opting to stay in one alone, always ready to receive calls, always ready for bad news.
But by the second day, there was still no news at all, everything seemed normal, so Gao Yang took Yelena to look for a house for real.
