(somewhat) hidden talisman easter eggs in season 5

Anyone ever noticed the (kind of) hidden talismans that appear randomly in the background throughout season 5? I believe they appear in most, if not all, episodes. Sometimes more than once.

Anyone knows if there ever was some official statement about them? Perhaps they were part of some promo? Maybe the creators really liked "Where Is Waldo (or Wally)" and decided to add one more layer of fun for the fans?

PS: never felt like watching this show when it originally aired. And I only gave it a chance now because I went full OCD with Journey To The West related stuff. But I was pleasantly surprised. It is much better than what I expected, specially considering what I assume to be the target audience. They really tried to make Jackie Chan behave like the Jackie Chan we know and love.

The only bad thing about the show is Jade. Every single episode I watched I wished things suddenly went super-dark and she got killed. In the very least they could have replaced her by a hot 10 year older version. It would make the relationship with Viper much more interesting :)

Never understood the need producers felt of shoving kid sidekicks in shows. No, I did not identify with them. No, I did not like them. I watched the show because of the main character and, if there is someone I wished to be, it would be the main characters, not some stupid sidekick.

Rant over. Now tell me about the hidden talismans!