We participated in the 3rd General Assembly meeting of the European Union-funded HappyMums project (Grant Agreement No. 101057390). The meeting took place in Catania, Italy, on September 20th-21st, 2025. We provided a brief update on the research activities we have conducted in various work packages, brainstormed findings with other WP partners, and developed ideas for extending collaborations with both internal partners and external consortia beyond HappyMums. On behalf of our group, Dr. Li Tian presented a study on characterizing parental genetic influences on psychiatric liabilities affecting children's internalizing and externalizing behavioral difficulties. This work has been carried out among eight European birth cohorts in the TRITONE consortium, which includes both HappyMums partners and external partners