he xiaoxin
@holiday_hxx
China, shanghai
Joined Sep 2018
World Rank: #10026 (3.5 points)
Institution: fudan university
Activity over the last year
Effectiveness
- Problems solved
- 22
- Solutions submitted
- 153
China, shanghai
Joined Sep 2018
World Rank: #10026 (3.5 points)
Institution: fudan university