Han adds that the principles of yin and yang plus the five elements explain how all things in nature grow on the basis of mutual interactions.
-- Reggie Aspiras, "'Kalbi,' 'bulgogi,' 'bibimbap'-the yin and yang of Korean food," Inquirer.net, 2011
The department's ragingly-successful Facebook page needed a communication avenue that would complement its change-a-minute, do-whatever-I-want attitude - a partner in crime, a yin to it's yang, a Starsky to it's Hutch.
-- Jake Poole, "Makeover adds tools to Medina Police website," Sun Star Courier, Medina Sun, 2011
Yin, almost always in association with yang, means "bright" in Chinese.