Mao Xiao
@matthew99
China, Changsha
Joined Nov 2012
World Rank: #5834 (6.1 points)
Institution: Yali Middle School
Activity over the last year
Effectiveness
- Problems solved
- 25
- Solutions submitted
- 107
China, Changsha
Joined Nov 2012
World Rank: #5834 (6.1 points)
Institution: Yali Middle School