What was the release date of a song by  Bae Su-ji that sold more than 1.3 million copies?
digitally on January 7 and later physically on January 14, 2016
Title: Dream (Suzy and Baekhyun song)
Passage: "Dream" is a song recorded by South Korean singers Suzy and Baekhyun, members of K-pop groups miss A and EXO respectively.  It was released digitally on January 7 and later physically on January 14, 2016 by Mystic Entertainment.  Having sold over 1.3 million copies, the song received multiple accolades at major South Korean music award shows in 2016.
Title: Bae Suzy
Passage: Bae Su-ji (; born October 10, 1994), better known by the mononym Suzy, is a South Korean singer and actress.  She is a member of the girl group miss A under JYP Entertainment .
Title: The Lovers' Guide
Passage: The Lovers' Guide is a sex and relationships advice brand, produced by Lifetime Productions International Ltd, which launched with the release of the first "Lovers' Guide" video in 1991.  Presented by the sexologist Dr Andrew Stanway, and produced by Robert Page and William Campbell, this became the only non-fiction film to top the UK video charts; it sold 1.3 million copies in the UK and went into 13 languages and 22 countries around the world.  The release caused controversy.  While the BBFC (British Board of Film Classification) granted the title an 18 certificate, which would normally be a license for general UK distribution, this was technically merely advisory and the producer, Robert Page, faced charges of obscenity, which were subsequently dropped.
Dream (Suzy and Baekhyun song) Bae Suzy