Locations
- — Germany
- — Tsingtao Hochschule
- — Viktor Runeberg’s office
- — England 1916
- — The village of Ashgrove in the suburbs of Fenton, Staffordshire, Britain
- — Yu Tsun is doing his spying in Staffordshire, England in 1916, during the first World War. His mission takes him to the village of Ashgrove, a rural area in the suburbs of Fenton.
- — Garden of Hai Feng
- — British artillery park on the Ancre
- — France
- — Train station
- — Dr. Stephen Albert's Pavilion
-
- — Ts'ui pen shut himself up in the Pavilion of the Limpid Sun, a building set in the middle of an intricate garden. Dr. Albert lives in a "kind of summer house or pavilion" accessible by a series of forking roads and a damp, zigzagging path.