The signs in this chapter range from the strongest warnings to gentler reminders. 禁(止) ‘forbid’ and 严禁 ‘strictly forbid’ are used for the strongest warning possible. 请勿 ‘please don’t’ may be a tad less strong than 禁止. There are also other verbs of warning such as莫 ‘don’t’, 不得 ‘must not’, and 不可 ‘may not’. The most common reminders include verbs 当心 ‘beware of’, 小心 ‘be careful about’ and so on. To convey a sense of seriousness, the language of warnings and reminders tends to be formal, replete with classical Chinese elements.