How Did the Chinese View the Results and Findings of Their

How did the Chinese view the results and findings of their Maritime Expeditions of the 1400s?

A) They concluded that all Westerners were evil and to be avoided.
B) They feared barbarians would try to destroy their fragile empire.
C) They thought the outside world had nothing significant to offer the Chinese.
D) They were not ready technologically to embark on lengthy sea ventures.
E) They felt that exploring an area once was sufficient, and return voyages were unnecessary.