Update about.md

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 I am Yan Ma, a Ph.D. student at the Department of Electronic Engineering, The Chinese University of Hong Kong, supervised by [Prof. Hongliang Ren](https://www.ee.cuhk.edu.hk/en-gb/people/academic-staff/professors/prof-ren-hongliang) and [Prof. Jiewen Lai](https://samlai.me/).
 
-**Research Interest**: I'm interested in robot vision, planning, and control with their applications to medical automation (etc., imaging, surgery).
+**Research Interest**: robot vision, planning, and control with their applications to medical automation (etc., imaging, surgery).
 
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 # Education
 
-**Department of Electronic Engineering, The Chinese University of Hong Kong (Hong Kong SAR, China)**   _01/2023 - 01/2027 (expected)_  
-Ph.D. Student in Electronic Engineering  
+**Department of Electronic Engineering, The Chinese University of Hong Kong**   _01/2023 - 01/2027 (expected)_  
+Ph.D. in Electronic Engineering  
 
-**School of Mechanical Engineering, Shanghai Jiaotong University (Shanghai, China)**   _09/2018 - 07/2022_  
+**School of Mechanical Engineering, Shanghai Jiaotong University**   _09/2018 - 07/2022_  
 B.Eng. in Mechanical Engineering
 
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@@ -33,7 +33,7 @@ B.Eng. in Mechanical Engineering
 
 **Conference Papers**
 
-1. Y. Wang, **Y. Ma** and H. Ren, "Navigational Augmented Reality for Robotic Drilling," 2024 IEEE International Conference on Advanced Robotics and Its Social Impacts (**ARSO**), 2024 [[Paper](https://doi.org/10.1109/ARSO60199.2024.10557802)]
+1. Y. Wang, **Y. Ma** (co-first author) and H. Ren, "Navigational Augmented Reality for Robotic Drilling," 2024 IEEE International Conference on Advanced Robotics and Its Social Impacts (**ARSO**), 2024 [[Paper](https://doi.org/10.1109/ARSO60199.2024.10557802)]
 
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