qǐng wù zài cèsuǒ nèi xīyān, qǐng wù jiāng zhǐjīn, shījīn, sùliàodài děng záwù tóurù biànchí

请勿在厕所内吸烟，请勿将纸巾、湿巾、塑料袋等杂物投入便池。

Please do not smoke in the restroom, and do not throw tissues, wet wipes, plastic bags, or other waste into the toilet