What are the visa & residency requirements in Beijing?

"In order to enter Beijing, one must first obtain a visa, either in person or by mail. The application process generally begins with gathering required documents such as a valid passport and other forms of identification. After obtaining the necessary documents, an application must be submitted to the nearest Chinese Embassy or Consulate. Upon submission of the application, the individual will receive an approval or denial within a few days. For those looking to stay in Beijing for an extended period of time, residency in Beijing, China must first be applied for. In order to stay in Beijing for a year or longer, an applicant must secure a visa from their local Chinese embassy or consulate, and supply documents proving their qualifications to complete the residency application. This includes items such as a valid passport and evidence of employment or education. After submitting the application, applicants will wait for the approval of the government and can expect to receive a China Residence Permit between one and two months after the application is approved. The permit is valid for up to five years, requiring no additional paperwork or applications," remarked another expat in Beijing, China.