Activity record is a detailed record of the process of the activity, to accurately and clearly record the time, place, participants, content and results of the activity and other information. For the activity record of Huaguo Mountain He Cheng Memorial Hall, it can be written according to the following steps:

1. Title: Record the specific name and time of the activity, such as "Huaguo Mountain He Cheng Memorial Hall 2021 Cultural Exchange Activity Record".

2. Activity information: including the date, time, location and participants and other information, such as "Activity date: May 10, 2021; Activity time: 9:00 a.m. to 5:00 p.m.; Activity location: Huagoshan Hecheng Memorial Hall Conference Hall; Participants: the museum staff, visiting scholars, representatives of the external media, etc. ".

3. Activity content: Record the whole process of the activity in detail, including the opening speech, keynote speech, discussion session, interactive session, etc.. Each session can be recorded in chronological order, for example, "9:00am: Speech by the Director of He Cheng Memorial Hall in Huaguo Mountain, introducing the background and purpose of the event; 9:30am: Keynote speech by XXX, a well-known scholar, explaining the historical background and significance behind the He Cheng Memorial Hall," and so on.

4. Activity results: record the results and effects of the activities, such as "through this cultural exchange activities, improve the understanding of visiting scholars to He Cheng Memorial Museum, promote academic exchanges and cooperation; external media reported on this activity to enhance the visibility of He Cheng Memorial Museum".

5. Conclusion: Summarize the overall effect of the activity and testimonials, for example, "This cultural exchange activity is a complete success, and it builds an important platform for the publicity and promotion of He Cheng Memorial Hall and academic exchanges, and at the same time, it also demonstrates He Cheng Memorial Hall's academic charms and cultural connotations".

Through the above steps, you can prepare a complete record of the activities of He Cheng Memorial Hall in Huaguo Mountain. Specific preparation can be adjusted and supplemented according to the actual activities to ensure the accuracy and completeness of the activity records.