File:Salute-please sign at SYSMH 1F 20210313.jpg
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![File:Salute-please sign at SYSMH 1F 20210313.jpg](https://upload.wikimedia.org/wikipedia/commons/thumb/4/4d/Salute-please_sign_at_SYSMH_1F_20210313.jpg/800px-Salute-please_sign_at_SYSMH_1F_20210313.jpg?20210319123901)
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