[New Feature] Refine variables naming convention to avoid conflict

[Tomorrow9]

SUMMARY

Now we don't have a naming convention of all these variables, when the increasing number of defined variables in this project, there may cause confusing or conflicts when using these variables. So it's better to define a policy on how to naming the variables in different folders or for different purpose.

ISSUE TYPE

• Feature Idea

ENVIRONMENT / OS

N/A

ADDITIONAL INFORMATION