Litian describes a man, or masculine aligned individual, who is mlnb and mlw, or a man who is attracted to non-binary individuals and to women. This attraction does not have to be exclusive. Litian is an umbrella term, like achillean, and is typically not used as an identity on it's own, however it can be if desired. individuals included in this umbrella are pansexual men, bisexual men, and any other men who are attracted to women and non-binary individuals.
History
The term appears to be coined by Tumblr user Arco-Pluris. The flag appears to have been created by the user Ultravioletfyre with a submission to the blog beyond-mogai-pride-flags[1].