Cigar Piccolo SHAKEI-SONSETSU

The motif comes from the Shakei-Sonsetsu, a four-character idioms.
It means to study even if one is in a very difficult situation.
The four-character idioms comes from the story that Che Yin, a old Chinese politician read under the weak light of firefly in summer, and Sun Kang, a old Chinese official read with the moon light reflected by snow in winter.