Dr. Guoshi Liu received his bachelor’s degree, master’s degree, and PhD from Northeast Forestry University in 1994, 1996, and 1999, respectively. He was a postdoctoral researcher at the College of Animal Science and Technology of China Agricultural University. He is currently a Professor at China Agricultural University's College of Animal Science and Technology. His main research interests include livestock, breeding, embryos, engineering, reproduction, genetics, dairy cows, sheep, melatonin, and oocytes.