极径

极 = 及 + 木 : As Joan of Arc (ji) and Yuwen Huaji (及) pass over the north pole (及) at Christmas just inside the space station's entrance (Ø2) they decide to celebrate this moment by having a little contest. Between them there is a rather large Christmas tree (木) and they decide that whoever climbs to its top (极) first is the winner.

径 = 圣 + 彳 : Father Christmas (圣) gives black sneakers (彳) to Joan of Arc (ji) in the engine's bathroom ((e)ng4). Joan of Arc happily puts her new shoes on instantaneously and circles father Christmas on a track (径) with a very small diameter (径), making father Christmas feel quite uncomfortable.