Chenggang Wu’s group started to research on Binary Translation (BT) technology since 2003. They try to provide a BT system for the China-made processor——Loongson. The performance of China-made processors is still much slower than state-of-the-art processors. They have to reduce the overhead of BT system as much as possible so as to provide users good experience. Now, their BT system can achieve 65% performance on average in comparison with native code generated by GNU CC4.4 –O3. In this talk, Chenggang will introduce their experiences and research progresses during their developing process.