**The 20th IMACS WORLD CONGRESS took place in Xiamen**

The 20th IMACS WORLD CONGRESS (IMACS2016) was held at Xiamen International Hotel from December 10 to 14, 2016. This event was hosted by the School of Mathematical Sciences Xiamen University and Fujian Provincial Key Laboratory of Mathematical Sciences and Scientific Computing. More than 200 researchers from all over the world participated in the conference. Five plenary talks were held and 18 min-symposiums were organized. Around 200 talks were presented.

The conference turned out to be a great success.