The 15th HKG Scout troop organized a bicycle trip from Hong Kong all the way to Chungshan / Zhongshan and Macao on December 1935.
Here's a picture of 3 of the Scouts posing with their bicycles before their journey.
A commemorative flag was made with signatures from participating scouts, framed and (amazingly) still surviving in the scout room to this day (https://gwulo.com/atom/38741)
