The first word "Ze" in the Chinese title is "Choose".
In August 2016, China issued a block on all Korean products and talents.. As result, the production company elected to cut out all scenes with character Ze Xiu, which was portrayed by a Korean actor, in order to secure the show's airing date.
It is part of the dramas that were affected by the Hallyu Ban, an unofficial ban that was in effect in China to restrict all forms of Hallyu aka Korean Wave due to the political disagreement between China and Korea over THAAD. On October 31, 2017, there were reports that both sides were making a move to mend diplomatic ties and news that the virtual ban has been lifted came days later. (Source: Sohu)