Overlooking the ocean atop Singapore’s glitzy Marina Bay Sands casino, the Chinese Communist Party is out of sight but, for at least a few patrons, probably not out of mind. Earlier this year the Chinese embassy in the city-state sought to “solemnly remind” its citizens that gambling while abroad, even in lawfully operated casinos, remains illegal. “Keep yourself clean” and report fellow Chinese caught having a flutter, diplomats instructed.