The IBS Discrete Mathematics Groupo welcomes Laihao Ding and Rounan Li, two long-term visitors to the IBS Extremal Combinatorics and Probability Group.
![](https://dimag.ibs.re.kr/cms/wp-content/uploads/2023/10/rounan-li.jpg)
Ruonan Li is an associate professor at Northwestern Polytechnical University, China. She arrived at IBS on September 29, 2023 and will stay with us until September 28, 2024.
![](https://dimag.ibs.re.kr/cms/wp-content/uploads/2023/10/laihao-ding.jpg)
Laihao Ding is a lecturer at Central China Normal University. He arrived at IBS on October 5, 2023 and will stay with us for 1 year.