SI數不能多於(主圖加附圖)
In addition to supplemental figures, you can also include supplemental items (such as movies, tables, etc.). The limit for the total number of supplemental items (figures + tables + additional SI items) is twice the number of main-text items.
E.g., In a paper with 6 main-text figures and 1 main-text table, you can have 14 SI items, and up to 7 of those may be figures. The remaining items, up to the limit of 14, can be any combination of movies, tables, etc.