Based on the story three kingdom era of china, xuande and zhang fei meet is when: c. they were both reading the governors notice.
governor ask xuande and zhang fei for volunteers to fight the rebels.
hope this help
Ecotopia was the name given by the author Callenbach to the region of Megalopolis.
They walked across the bering strait which was the land bridge at the time this is the theory
China, Mongolia, South East Asia