issue #3435. Add chapter9's en.md
issue #3435. Add the outline of this tutorial.
issue #3435. Finish the first section
delete wrong url.
modify text format.
modify text format.
modify text format.
issue #3435. add another two sections
issue #3435. Finish the chapter 9
fixed #3435. Finish the catalog and chapter 9
Merge pull request #23 from andyque/feature3435

Feature#3435
Add en & zh catalog for the next schedule of jobs. Rename folder "new_gui" to "guy"