Table 3.

The main features of Huiyou identified from stage 2 (ie, prototyping workshops).

Functionalities and features		Suggestions to implement
Generating story materials
	Obtain a topic for memory retrieval	Inform the topic and collect relevant materials in advance
	Collect materials	Add a description to each record Collect pictures from others via the internet Casually record fragmented information
	Add material description	Add essential character to each material Link to the sequential steps of the country’s development Follow the timeline to show the content Categorize by different activities
	Integrate materials	Upload selected materials to the target topic Change the sequence of the materials
Memory retrieval activity
	Story presentation	Prepare a cheat sheet to obtain tips Avoid interruptions during the presentation Set visual timer
	Group discussion	Combine memories and discuss Raise hands to ask questions Open discussion
	Story summary	Generate a record or memory
Sharing story
	Share storytelling records with certain a person or group	Share the record via WeChat (Tencent Holdings Limited)