How to link urls and twig templates in Symfony2 ?

Question

symfony

I have written links in the application with addresses of the correct formats (quite intelligible and understandable). Written by a previous developer. It looks like this:
abcd.com/card/add/person
abcd.com/card/show/person
abcd.com/card/list_all_people
Now I need to add a twig template to each address (add_person.html.twig , show_person.html.twig , list_all_people.html.twig).
Questions:
Where (in which symfony2 project directory) should these templates be created?
How do I link them to their respective urls? Is this done in the admin panel or in some config?
Thanks in advance

Answer 1

I suspect that you should have a CardController somewhere and there all this stuff is stuffed either in the @Template annotation or the render function is simply called. In the bundle in which your controller is located (no idea what they are called) there is a Resources/views directory. For good, you should create a card directory in it and put templates there.
See the Symfony documentation for details.

Answer 2

can someone visually be able to depict the routing logic in symphony (as simple as it is generally real)?
documentation is read with gaps in understanding