請勿吸煙

请 = 讠 + 青 : The Queen of Hearts set up a fountain of youth right in the middle of the engine. She invites everyone to take a sip and even set up an advertising column to motivate the visitors to come and try it.

勿 = 丿 + 勹 : Mnemonic symbol from the shape of the character: bat wings. The 丿 strokes look like the fingers of a single bat wing.

The elephant (勹) wants to eat a banana (丿) in the space station's bathroom (Ø4), but Willy Walrus (w) suddenly flies by (using bat wings (勿)), snatches the banana away and shouts "do not!" (勿)

吸 = 及 + 口 : Just when Marie Curie (xi) and Yuwen Huaji (及) were on a space trip in front of the space station (Ø1) they encountered an emergency: the failure of their oxygen supply. Their last hope is a hollow mandarin (口) they brought, out of which they suck (吸) their oxygen.

烟 = 因 + 火 : Maud Younger (y) is giving René Descartes (因) fire (火) for his tobacco (烟) pipe in front of the anthill (an1).