It wasn't difficult to sneak inside Wei Zu Tian's villa, it seems they are more focused on security outside but not inside, maybe they thought that no one could enter or leave their ranks. Obviously, they were not as thorough as their master.
As they searched Guan Men Niang's courtyard, they stumbled with two maids in the kitchen, the two maids seemed to be arguing about something, since they needed more information about the Heaven's Gate sect, they decided to eavesdrop for a moment.
"Why do I have to be the one serving food to that woman?!" the young maid slammed her tray on the table in annoyance.
"Stop complaining, it's your turn this time so you have to do it!" the second maid admonished her.
"Why are we still letting her alive, she clearly violated our master's rules, why is she still being allowed to live?!" the young maid vexed.
The second maid stare at her and sighed "What do you know, Master Wei still wants him alive so what can we do?"