In 1999 , he returned to China and served as a research scientist at the Chinese Academy of Sciences .
From 1988 to 1998 , he was a visiting scholar at the Max Planck Society in Germany and at Rutherford Appleton Laboratory in the United Kingdom .
In 1999 , scholar returned to China and served as a research scientist at the Chinese Academy of Sciences .
From 1988 to 1998 , he was a visiting scholar at the Max Planck Society in Germany and at Rutherford Appleton Laboratory in the United Kingdom .