Yang Liwei, chief designer of the Manned Space Program, said in a television interview that there will be no women in this flight, but they will be incorporated later on.
The members of the mission are command officers and engineers, two of whom will leave the spacecraft and the third will wait inside.
They are currently in the final preparations for the maneuver and will remain in cosmos for three months to repair, maintain and assemble the space station.
China will send these professionals after the Tianzhou-2 cargo spacecraft docked with the central module of the Tianhe station to deliver supplies, equipment and fuel.
The government plans to send a total of 10 manned missions to train in the on-orbit assembly and construction of complex and large spacecraft, as well as in the conduct of long-duration near-Earth flights and large-scale experiments.