What does Country Garden po mean by employment?

This means the outsourcing of Country Garden.

"PO Employment" is the abbreviation of "Post Outsourcing Employment". Post outsourcing is a way of employing people. The employer completely outsources all kinds of personnel affairs such as recruitment, training, salary design and accounting, tax declaration, social security accumulation fund payment, performance design, reward and punishment execution of a certain post to the labor service company, and the labor service company also undertakes labor relations management, labor dispute handling, work-related injury risks and economic compensation that may be brought by labor employment.