C1423 Who's the Master 4

The nanny pulled Mu Yunhua's sleeve and whispered, "Why can't they see us?" Did they use some kind of method?

Mu Yunhua understood what the nanny meant, but the Invisibility Technique was really useless!

"It's not that they didn't see us, but that they pretended not to see us." Mu Yunhua replied.

"Why?" The nanny was curious