Dear Fellow Pediatricians, Pediatric Specialists, Friends, The 4th Asian Paediatric Pulmonology Society (APPS) annual scientific congress will take place in Beijing International Convention Center on December 7-9. On behalf of the Congress Organizing Committee, we hereby extend our invitation for you to be present at this medical conference. In 2015, we gather in Hong Kong for our very first Congress and established APPS as a medical society; in 2017, we met in Singapore and witnessed the growth and progress of our specialty field; in 2017, our journey took us to India, where over 100 speakers presence lit up the academic stage; in 2018, we look forward to meeting you again in Beijing. Please bring your medical expertise, clinical skills, and research outcomes, and share them with colleagues and friend in an open, innovative and collaborative environment. We believe your participation can bring outstanding value to the Congress, and to the development of pediatrics. It is our pleasure and honor to invite you to join us, for an excellent clinical learning as well as a networking opportunity. Let us work together to advance pediatric practice and research in our region.