Buildings with black-and-white squares on exterior walls in Jinan City, the capital of East China’s Shandong Province, May 29, 2016. The striking appearance leave some residents perplexed, it's reported. (Photo/iqilu.com)
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Buildings with black-and-white squares on exterior walls in Jinan City, the capital of East China’s Shandong Province, May 29, 2016. The striking appearance leave some residents perplexed, it's reported. (Photo/iqilu.com)