abstract:Fei Xin (; ca. 1385 - after 1436) was a member of the military personnel of the fleet of the Ming dynasty admiral Zheng He, known as the author of a book about the countries visited by Chinese ships.
Objective: to study the mechanism of YI-FEI-KANG-XINcapsule in patients with chronicpulmonaryheart diseaseandto explore the effectof the serum levelofmatrix metalloproteinase-1 (MMP-1).