The following is a notification template for team building activities, which neither explains the characteristics of the activities nor involves age restrictions.： --- **Notice of registration for organizing outdoor development activities** Dear colleagues： In order to promote teamwork and stimulate vitality, we plan to organize an outdoor outreach event on [date]. This activity is mainly [mountaineering/hiking/orienteering, etc.]. The intensity of the activity is large (it is expected to last for 4 hours and include some strenuous exercise sessions), and participants need to have a good physical fitness foundation. In order to ensure the safety of the event and the effect of the experience, it is recommended that registered colleagues do what they can according to their own health. On the day of the event, please wear sports-friendly clothing and non-slip shoes, and bring your own drinking water and sun protection products. This event is the first attempt of a series of team building. In the future, we will plan more diversified activities to meet different needs. Regardless of whether you participate in this event or not, the contribution of every colleague is an indispensable part of the team! For registration, please contact [Person in charge] before [deadline]. Places are limited on a first-come, first-served basis. --- **Core points：** 1. Replace the age point with "physical fitness requirements" to objectively describe the intensity of activities 2. Emphasize safety considerations and guide independent assessment of the feasibility of participation 3. Preview different types of follow-up activities to reflect inclusiveness 4. Maintain positive wording and avoid negative words 5. Intensity is hinted at through specific indicators such as "vigorous exercise" and "duration". **Precautions：** -Prepare an emergency plan in advance. If there are indeed elderly but physically fit colleagues who sign up, they should be treated equally. -Alternative light activities can be prepared privately to avoid completely excluding special circumstances -Be sure to organize activities suitable for different groups in the follow-up to fulfill the promise This expression method not only complies with the norms of labor law on age discrimination, but also realizes natural screening through objective activity descriptions, while maintaining team cohesion.