When in noisy environments (including tourism hotspots with many simultaneous guided tours), in loads of spots I've taken tours in, the response is to stand closer to your guide. I've noticed Pretty much only in China that as an alternative, tour guides simply just try and be even noisier ... https://custom-tour-guide-flags72750.webdesign96.com/32400258/the-basic-principles-of-tour-guide-flag