in the 17th century, during the cheng dynasty, beijing was built around the forbidden city.ive ring roads surround the castle. whether you live within or without these ring roads determines your financial status. a home within the second ring road is said to cost at least 1 milli million. the average annual salary in beijing is $7,800 only the very fortunate can buy a home. >>> of bay jirng's residents, 38% are from rural areas. the bay jings cbd located between the third and fourth ring roads is where 70% of foreign companies hold offices. many media outlets are also located here. one man bought a studio apartment for 500,000 u.s. dollars in this district a year ago. >> this man works for a real estate agency. this studio apartment is about 66 square meters in size. he lives here with his wife he purchased this apartment because it was close to his office. but if he puts it on the market now, he could sell it for more than 600,000 u.s. dollars. >> he owns two other apartment units. if he sells them, they would both sell for $700,000 each. >> being born in beijing enabled hi