add branch222 --no-ff fix bug10 1 add branch1 testtest add merge22 add merge branche22222222222222222222222222222 and simple add branch dev checkout -b afdfasd branch branch branch branch branch branch branch branch branch okkkkksdfasdfsadffasdfak hahahah sanhanghang Git is a distributed version control system. Git is free software okok add yihang add erhang add yihanghang add erhanghang