Tian (previously known as Tan) is one of the base metals from the alloy alignment system based on titanium. It represents a gender that is, to some degree, genderless in nature. It has no gender element expression and cannot be described as being any linity. One's gender may be completely lacking in element expression or one could not have a gender at all. It similar to agender, gendervoid, antigender, or singularian. How one expresses or experiences their lack of gender is defined by them. A tian person can have any alignment or presentation.
History
Tian was originally coin on December 1, 2018 Hail, the original owner of the Tumblr blog lgbt-alchemy[1]. At the time it is was called known as tan and the plural form was tanum. On December 19, 2019 the alloy alignment system was reworked Tired, the new owner of the blog[2]. In this rework the name of the term was change to tian. It's unknown what the plural form of the new term would be.
The flag is based on the color of titanium, and the symbol used is the alchemical symbol for Earth.