In short, even though all of his subordinates were very loyal to the [Red-Eyes Winged Lizard], but they would still need to follow the order from all the higher-ups.
If the higher-ups of Lizard Clan ordered some of his subordinates to report everything that happened on this mission to them, then his subordinates would not hesitate to tell everything to the higher-ups, including how Tang Li Xue came to their squad and acted as if she was an old friend of their squad leader.
Tang Li Xue and the [Red-Eyes Winged Lizard] discussed for a while about how they should act in front of the giant lizard squad to not make that squad and the higher-ups felt suspicious toward both of them.
In the end, Tang Li Xue and the [Red-Eyes Winged Lizard] decided to act as childhood friends who had not met each other for a very long time.
It was actually Tang Li Xue's idea from the novel she read in her previous life. It was a very cliche excuse, but 100% works in every novel story.
