Tianyu Jia is currently a PhD student at Chongqing University, working under the supervision of Professor Sibo Zheng. His research interests mainly focuses on the new physics of the early universe, particularly during inflation and the subsequent reheating stage. He employs numerical simulations to investigate the relevant physical processes in this era and analyse the resulting data to probe potential signatures of beyond-the-Standard-Model physics. His work aims to deepen the understanding of the universe's earliest moments and connect high-energy theory with observable cosmology.