Since 2018, I have been a researcher at the Institute of Animal Sciences, Chinese Academy of Agricultural Sciences (CAAS) in Beijing. My work revolves around the “nutrition–environment–health” continuum in livestock and poultry production, integrating fundamental research with technology extension to advance healthy and efficient farming systems. My research is built around two complementary themes. The first addresses environmental physiology and indoor climate management. I seek to simultaneously improve housing environmental quality, animal health, and production performance through optimized equipment, management practices, and nutritional strategies. A core interest is understanding the generation and distribution of airborne pollutants (such as PM2.5 and lipopolysaccharide) and airborne microorganisms, and how they affect respiratory health—with an emphasis on the mechanisms of pulmonary macrophage pyroptosis and inflammatory responses. These mechanistic insights underpin precision environmental control in animal houses. The second theme focuses on feed resource evaluation and the development of functional bioactive substances. My work investigates how unconventional feed ingredients, enzymes, probiotics, and postbiotics modulate growth performance, intestinal barrier integrity, gut microbiota, and microbial metabolites, with the goal of supporting scientifically sound antibiotic reduction and replacement strategies in animal production.