haha ha
@lixuyuan
China, 绍兴
Joined Mar 2019
World Rank: #3955 (8.7 points)
Institution: 一中
Activity over the last year
Effectiveness
- Problems solved
- 48
- Solutions submitted
- 102
China, 绍兴
Joined Mar 2019
World Rank: #3955 (8.7 points)
Institution: 一中