LibFetion is a third-party Feixin application developed by Deng Dongdong. As we all know, Feisin operation is more resource-consuming, leading to many people are reluctant to open Feisin while doing other things. There is no official release based on linux,MAC OS,IPHONE, Symbian and other platforms. The introduction of LibFetion facilitates the popularization of mobile Feisin. Because the program has a strong cross-platform, there are versions on mainstream operating systems and handheld devices. The most important thing is that it runs fast, green, and takes up less memory.