Table 1.

Description and coding standard of the intrinsic attribute-related variables.

Index	Instruction	Coding standard
The number of days to open TikTok	The number of days from the beginning of release of the first TikTok to 0 clock of September 1, 2021.	The number of days is recorded as 1, 2, 3……
Whether the nickname contains expression elements	A nickname is a name that an individual presents to the public according to her own preferences. It can include words, letters, symbols and expressions.	In the nickname, the one without expression is marked as 0, and the one with expression or only with expression is marked as 1.
Whether there is a commodity window display on the personal home page	Shop window is a kind of commodity sharing function of TikTok, which can be opened after self application and approval.	If there is no shop window, it is recorded as 0; if there is shop window, it is recorded as 1.
Whether there is a personal profile on the personal home page	Personal profile is a kind of personalized self introduction of TikTok. Users can edit personalized or comprehensive information in this column to make the public quickly understand or deepen their impression.	0 for no profile and 1 for profile.
Whether it is marked with other platform accounts	Mark other personal platform accounts in personal profile of TikTok, such as Microblog, Wechat, Little Red Book, IG and other account names.	If it is not marked, it will be marked as 0, and if it is marked, it will be marked as 1.