Are Gou Zi and Xun Zi the same person?

No. Because Gou Zi is, he is also called Wang Gou Zi, whose word is respect for benevolence and fine print is Gou Zi, a minister and calligrapher of Jin Dynasty. Xunzi's name is Qing. At the end of the Warring States period, people in Zhao were all thinkers, philosophers and educators, and they were all representatives of Confucianism, so Gou Zi and Xun Zi were not the same person.