The ngii, also called the yao'yao after the sound it makes, is a semi-aquatic domestic animal indigenous to RyiX'yan Hyoton IIIhttps://robertsspaceindustries.com/galactapedia/article/bBz9mEDyqO-ryixyan-hyoton-iii. Speakers of UEE Standard have been known to refer to the ngii as the yengi cat. A popular pet in the Xi'an Empirehttps://robertsspaceindustries.com/galactapedia/article/0n96JkwNo9-xian-empire, it has lived alongside the Xi'anhttps://robertsspaceindustries.com/galact
Lore encyclopedia entry
The ngii, also called the yao'yao after the sound it makes, is a semi-aquatic domestic animal indigenous to RyiX'yan Hyoton IIIhttps://robertsspaceindustries.com/galactapedia/article/bBz9mEDyqO-ryixyan-hyoton-iii. Speakers of UEE Standard have been known to refer to the ngii as the yengi cat. A popular pet in the Xi'an Empirehttps://robertsspaceindustries.com/galactapedia/article/0n96JkwNo9-xian-empire, it has lived alongside the Xi'anhttps://robertsspaceindustries.com/galact
Updated October 25, 2026
The ngii, also called the yao'yao after the sound it makes, is a semi-aquatic domestic animal indigenous to RyiX'yan (Hyoton III). Speakers of UEE Standard have been known to refer to the ngii as the yengi cat.
A popular pet in the Xi'an Empire, it has lived alongside the Xi'an since they developed farming, and is used for pest control and fishing along with companionship. Ngii typically have free roam of the homes they live in, and sleep on perches meant to mimic low tree branches.