multiple channel sending using module Bluetooth HC-05

Hi there!!! :slight_smile:
I am now doing a subject require sending multi channel through hc05. i found some ways to solve but unsuccessfully, could anyone tell me the simplest way to solve it?
thank you! :confused: :confused: :confused: :confused: :drooling_face: :drooling_face:

Post your code that is your way of doing it and explain why you think it's not the best way