国務院台湾事務弁公室
Though nominally a private body, ARATS is directly led by the Taiwan Affairs Office of the State Council. Chen's new office at ARATS is in the same building complex as his old office at the Taiwan Affairs Office. The ARATS is the body directly responsible for negotiating with the Strait Exchange Foundation (SEF), its counterpart in Taiwan, which is correspondingly directly led by the Mainland Affairs Council of the Executive Yuan.