xinhao zhao
@promise_
China, sichuan
Joined Aug 2021
World Rank: #10893 (3.2 points)
Institution: none
Activity over the last year
Effectiveness
- Problems solved
- 40
- Solutions submitted
- 120
China, sichuan
Joined Aug 2021
World Rank: #10893 (3.2 points)
Institution: none