Five years. Zhou Weiguo: He studied in the ninth period of Huangpu Military Academy. At this time, the Whampoa Military Academy has been regularized, and each session will last for three years. However, Zhou Weiguo did not leave the army immediately after finishing his military school study, but transferred to Germany and was sent to Berlin Military NCO School for further study. I have been away from the small Berlin military school for two years.