jianhong chen
@lxcjh4998
China, wenzhou
Joined Mar 2025
World Rank: #8626 (4.1 points)
Institution: cangnan xinghai school
Activity over the last year
Effectiveness
- Problems solved
- 25
- Solutions submitted
- 47
China, wenzhou
Joined Mar 2025
World Rank: #8626 (4.1 points)
Institution: cangnan xinghai school