Is the Crusade a war of self-defense or aggression? The thick ancient city wall site and the strong iron gate warn us that this is a disputed place, this is a disaster and a difficult nation! But this is also a strong nation! The blue sea and blue sky on the left, the remnants of the wall on the right; Let me think of the prosperity and depression in our lives, peace and war, in fact wisdom and stupidity, good and evil are actually in the same mind!