I need to work with Yicheng on a project on my github. From my existing repository, I need to make a branch and work with him

	
I found out a help post, and I am following it step-by-step
	
git checkout -b Rproj_w_yicheng
	
git checkout Rproj_w_yicheng
        
git remote add ocri3-w-yicheng https://github.com/ImageRecognitionMaster/myOCRI-iii
	
git branch
	
git branch -D Rproj_w_yicheng
	
git push origin :Rproj_w_yicheng

Here is the end results.