Table 1.

Content category of posts and example posts.

Categories	Example posts
latest news about the COVID-19 crisis	#Health release# As of 24:00 on February 25, a total of 29,745 discharged patients have been cured across the country, of which 11,793 have been discharged from Wuhan and 20,912 have been discharged from Hubei.
appreciation to front-line emergency services	#How beautiful are you #【#Tribute to the most beautiful retrograder# | posters of the “pandemic” moment series】Medical workers shouldered the mission, faced the difficulties, and worked day and night in the most dangerous positions to form a solid line of defense. @Baoding First Central Hospital.
guidance for stakeholders	#Health science#【Please see here, the new baby's COVID-19 Protection Strategy is coming】The family has children's attention to it!#Healthy China Initiative 2020#
information about the government's handling of the crisis	#Health release#【Several measures on improving the working conditions of frontline medical staff and earnestly caring about their physical and mental health】Several measures on improving the working conditions of frontline medical staff and earnestly caring about their physical and mental health.