Complex sentence: Pereira had served as British Military Attaché in Peking from 1905 to 1910 and was fluent in Chinese, and made many adventurous journeys in China and Tibet, frequently travelling thousands of miles on foot.
Split into simpler sentences: Pereira had served as British Military Attaché in Peking from 1905 to 1910 and was fluent in Chinese. He made many adventurous journeys in China and Tibet, frequently travelling thousands of miles on foot.