Usually writers are told to show don’t tell, but if they followed that
advice to the letter, stories would be filled with boring scenes to show
time passing or backstory. Sometimes a direct line of exposition is the
best choice. Learn when to tell don’t show.
— Read on www.ignitedinkwriting.com/ignite-your-ink-blog-for-writers/how-to-use-exposition-in-creative-writing/2018