Complex sentence: In 1911 Maze was appointed to the senior post of Commissioner in Canton, serving until 1915 when he was made commissioner in Tientsin (1915-1920), followed by Hankow (1921-1925).
Split into simpler sentences: In 1911 Maze was appointed to the senior post of Commissioner in Canton. In he was made commissioner in Tientsin (1915-1920), whuc was then followed by a posting in Hankow (1921-1925).