Complex sentence: It describes the flag as "square", while the flag in the photographs has proportions closer to 4:5; with a dragon "facing the fly end", while the dragon visible in the photos faces the hoist.
Split into simpler sentences: It describes the flag as "square", while the flag in the photographs has proportions closer to 4:5. The document describes the dragon as "facing the fly end", while the dragon visible in the photos faces the hoist.