Guo Yufeng

• Activity
• Posts3
• Comments9

Activity

• 
  Guo Yufeng earned the Name Dropper badge.

  Mentioning someone in a discussion (like this: @Name) is a great way to encourage dialog and let them know who you’re talking to.

  October 29
• 
  Guo Yufeng earned the First Anniversary badge.

  Thanks for sticking with us for a full year.

  October 29
• 
  Guo Yufeng earned the Second Anniversary badge.

  Thanks for sticking with us for 2 years.

  October 29