Members of future generations WuJu-tong created fluidincreasing decoction for purgation, seemingly accord with three urgent purgation with Shaoyin quite a radical.

Based on FY-2 infrared images and the reanalysis data for six hours of NCEP(1°×1°),the heavy dust storm process occurred on 13 April 2007 in the middle west part of Hexi corridor is analyzed,particularly the cloud head of the descending jet was tracked and the gravitational instability,conditional symmetric instability and conditional instability are diagnosed in detail.