* Add 7day course info on readme

* Update README_cn.md

* Add homework file

* Update homework1.md

* add github homework submit instruction

* Update README_cn.md

* Update README.md

* Update requirements.txt

* Update README.md

* update hw1

* update answer, test=document_fix

* Add 7day course info on readme

* Update README_cn.md

* Add homework file

* Update homework1.md

* add github homework submit instruction

* Update README_cn.md

* Update README.md

* Add 7day course info on readme

* Update README_cn.md

* Add homework file

* Update homework1.md

* Update mai-ha-hi related content

* Change description of first order motion model

* Add education project

* Update README.md
Co-authored-by: NLaraStuStu <lvxueying1991@foxmail.com>