BEIJING HAS A LONG AND RICH HISTORY. BEJING CITY WAS ESTABLISHED FOR 3000 YEARS AGO. THE EMPEROR QIN UNITED CHINA IN 221 BC, AND SINCE THEN BEJING HAS PLAYED AN IMPORTANT ROLE IN NORTH CHINA. IN THE PERIOD 581-618 BEIJING HAD A POPULATION AROUND 130.000! AT THE SAME TIME, IT BECAME A MILITARY AND BUSINESS CENTER. IN 1215, BEIJING WAS OCCUPIED BY THE GREAT MONGOLIAN LEADER GENGHIS KHAN. BEIJING HAS HAD MANY DIFFERENT NAMES UPON HISTORY, BUT IN 1403 IT GOT THE NAME BEJING. BEIJING ACTUALLY MEANS CAPITAL IN THE NORTH ON CHINESE.