He Did Push-Up at The Great Wall, Naked
And not just The Great Wall alone, he did that at many many famous locations in China, like 天津眼, 乐山大佛, 奥运鸟巢 and ect. the photos look real. His name is 区志航, a TV presenter from Guangdong TV station. Read 超越“做俯卧撑”的《景.观》 (Chinese) for his reason of doing that.