|Founded by Ming He, Yin Shi acts as Republic City's private paramilitary organisation. She decided that by having various freelance agents pool their resources together that they would function more effectively as a team. Yin Shi's day-to-day activities consist of chasing down and turning in bounties in and around the city, as well as running a bar within their base. From time to time Yin Shi takes on contracts set by clients in need of paramilitary aid.
Despite being the main leader and founder, Ming He assigned Michiko to run operational management of Yin Shi in her place, feeling that her own skills would be more effective in the field.
The large presence of technically adept members gives Yin Shi access to various technologies and vehicles to increase their effectiveness. Their headquarters is based out of the Fifth Element, a bar used to help disguise their base, generate revenue and keep tabs on the city's more subtle activities.