China flushing out urban hygiene issues | Brief letters

Chinese public toilets | Guardian letters | Cuttlefish signalling | Driverless boats | Productivity | Paddington 2Your report on Xi Jinping’s drive to improve China’s public toilets (Xi Jinping makes China’s toilets a number two priority, 28 November) made me wonder if he isn’t calling for an end to the “One country, two cisterns” strategy. And while China’s public toilets may not be as clean and hygienic as they could be, they are at least in plentiful