Is only the first big province of shanxi, which accounts for only 41% of the population, accounting for 3.8% of the total population in Shanxi Province.In the national distribution mainly concentrates in shanxi, zhejiang (13%), the two provinces only accounting for only about 54% of the population;Secondly distributed in sichuan (9.4%), henan (7.9%), (5.8%) in fujian province and shandong (4.3%), the four provinces and focused 28% only.The only major distribution area, north of Yangtze formed in the north of shanxi, the southeast of zhejiang province, in western sichuan as the center of the three pieces only accumulation.