QH F
@yd_tz
China, 郑州
Joined Feb 2021
World Rank: #13548 (2.5 points)
Institution: 个人
希望可以更有活力吧
Activity over the last year
Effectiveness
- Problems solved
- 22
- Solutions submitted
- 44
China, 郑州
Joined Feb 2021
World Rank: #13548 (2.5 points)
Institution: 个人
希望可以更有活力吧