Chinese authorities have blacklisted four people for misbehaving while traveling, as Beijing seeks to improve the image of its tourists who are visiting the world's touristy spots in increasingly large numbers but also are earning a reputation for rudeness.

China National Tourism Administration this week released a list of four tourists, including a woman who poured instant noodles soaked in hot water onto an attendant on an AirAsia flight from Bangkok and made insults and threats at the attendant.

Blacklisted people could see their travel plans affected. The rule that took effect in April allows authorities to blacklist a tourist for unruly behaviors and notify police, customs, border security, transportation agencies and credit agencies.