Complex sentence: It also contained basic information on the Western world, including the geography and weather of England, western food, and western weapons as well as sharing the knowledge of astronomy that Yi Su-gwang had acquired from an Italian priest staying in China at the time.
Split into simpler sentences: It also contained basic information on the Western world, including the geography and weather of England, western food, and western weapons. He also wrote about the knowledge of astronomy that he had acquired from an Italian priest staying in China at the time.