The National Tourism Administration publicised its 64-page Guidebook for Civilised Tourism -- with illustrations to accompany its list of dos and don'ts -- on its website ahead of a "Golden Week" public holiday that started on October 1.
As Chinese tourists increasingly travel abroad, they have developed a stereotype of "uncivilised behaviour", which Vice Premier Wang Yang said in May had "damaged the image of the Chinese people".
A mainland Chinese woman who in February had her son relieve himself in a bottle in a crowded Hong Kong restaurant sparked an outpouring of anger online, with some locals deriding mainlanders as "locusts".
The government has previously issued pithy guidelines telling tourists how to behave, but the latest booklet elaborated in great detail.
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It warned travellers not to pick their noses in public, to keep their nose-hair neatly trimmed and, if they had to pick their teeth, never to use their fingers.
Travellers should not drink soup straight from the bowl or make slurping sounds when eating noodles, it warned.
And after taking a flight they must leave the life jackets underneath their seats, the rulebook said, explaining that "if a dangerous situation arises then someone else will not have a life jacket".