Prof. Chen, with other co-authors including Prof. Richard P. Stanley, Prof. CH. Yan and Dr. YP Deng, Dr. RX Du, finished the paper entitled Crossings and nestings of matchings and partitions and had hit China's 100 most Iinfluential International AcademicThesis. The paper has been published in Trans. Amer. Math. Soc.Reviewers comment this paper as following: Not only is this a highly non-trivial result, it is also inspiring for future investigations as there are numerous interesting and challenging questions around it, some of them mentioned in the last section of the paper.