On the afternoon of April 26th, the SIES held a special discussion meeting with a focus on the "Characteristics and Trends of the US-EU Transatlantic Relations", which was one session of "Quadriga SIES", a brand academic salon sponsored by the SIES. The participants of this discussion were: Dr. Cao Ziheng, Dr. Dai Yichen,Dr. Fang Xiao, Prof Xin Hua, Dr Yang Haifeng, Prof Ye Jiang, Ms. Ye Yumin, Prof Zhang Ming, and Dr. Zhu Zhengyong.