Table 1. Examples of Weibo posts explaining the origin and purpose of GHD.*.

	English translation	Notes
Example 1	[Global Handwashing Day] Global Handwashing Day was initiated in 2008 by the Global Public-Private Partnership for Handwashing with Soap to call upon the nations of the world to hold activities promoting handwashing with soap on 15 October every year. According to the World Health Organization, “correct handwashing” needs to satisfy four criteria: handwashing before meals, after defecation and touching coins, etc.; using running water; using soap or other cleansing products; handwashing for no less than 20 seconds. Do you wash your hands often?	Altogether there were 13 Weibo posts in our data set that mentioned PPPHW.
Example 2	[Global Handwashing Day] 15 October is Global Handwashing Day. Even though handwashing is a small thing in daily life, this simple and important action has a very significant effect on raising people’s hygiene awareness and preventing diseases. Kids, especially, must develop good handwashing habits and love handwashing. Dear everyone, is your handwashing method correct? If it isn’t you need to learn it well.	There were another seven Weibo posts in our data set that were very similar to this post.

* The original Chinese posts and the emotion icons therein can be found in Alternative Table 1 in the Online Supplementary Materials.

GHD, Global Handwashing Day; PPPHW, Private-Public Partnership of Handwashing with Soap.