On behalf of the GNIDE Organizing Committee, it is our privilege to invite you to the international conference "Geometric Numerical Integration of Differential Equations",September 9-13, 2019, in Beijing, China! We are honored to host this event and look forward to welcoming our friends and colleagues from around the world.

The aim ofthis conference is to discuss recent advances in Geometric Numerical Integration of Differential Equations with its Applications. The main activities will be held at the Chinese Academy of Sciences including the opening ceremony, all the scientific presentationsand the closing ceremony. A half-day excursion is planned in the afternoon of September 11th. Detailed information willbe posted in the "Tours Information" part. We will host a banquet in the evening of September 12thduringwhich we will celebrate the 70th birthday of Ernst Hairer and 60th birthday of Christian Lubich.

We extend the warmest welcome to all of you, and hope that you will enjoy the conference in Beijing.