Complex sentence: He visited almost every part of China, including Xinjiang and Tonking (northern Vietnam) and accompanied Captain William Gill on his expedition in 1877 from Chengdu to Burma via Litang, Batang, Dali, along the Tibetan borderlands to Bhamo.
Split into simpler sentences: He visited almost every part of China, including Xinjiang. He also visited Tonking (now northern Vietnam) and accompanied Captain William Gill on his expedition in 1877 from Chengdu to Burma via Litang, Batang, Dali, along the Tibetan borderlands to Bhamo.