On September 2-4, Shizhen and Gan attaend the International Aerosol Conference 2026 at Xi’an. Gan gave a keynote speech on the idea of triple nexus of PACs-light absorption-toxicity of the extractable organic matter (EOM) in PM2.5. Shizhen gave a special invited talk for the session of Female Scientist Development looking back and forward her academic career and interacting with active female scientists from Europe and Australia. We saw lots of familiar faces, including Professor Kimitaka Kawamura, who has been a good friend of our group looking after Buqing’s study on di- and mono-acids. Haoyu attended and acted as a session organizer. It is a memorable event.